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5 Benefits of Learning Through the Case Study Method

• 28 Nov 2023

While several factors make HBS Online unique —including a global Community and real-world outcomes —active learning through the case study method rises to the top.

In a 2023 City Square Associates survey, 74 percent of HBS Online learners who also took a course from another provider said HBS Online’s case method and real-world examples were better by comparison.

Here’s a primer on the case method, five benefits you could gain, and how to experience it for yourself.

Access your free e-book today.

What Is the Harvard Business School Case Study Method?

The case study method , or case method , is a learning technique in which you’re presented with a real-world business challenge and asked how you’d solve it. After working through it yourself and with peers, you’re told how the scenario played out.

HBS pioneered the case method in 1922. Shortly before, in 1921, the first case was written.

“How do you go into an ambiguous situation and get to the bottom of it?” says HBS Professor Jan Rivkin, former senior associate dean and chair of HBS's master of business administration (MBA) program, in a video about the case method . “That skill—the skill of figuring out a course of inquiry to choose a course of action—that skill is as relevant today as it was in 1921.”

Originally developed for the in-person MBA classroom, HBS Online adapted the case method into an engaging, interactive online learning experience in 2014.

In HBS Online courses , you learn about each case from the business professional who experienced it. After reviewing their videos, you’re prompted to take their perspective and explain how you’d handle their situation.

You then get to read peers’ responses, “star” them, and comment to further the discussion. Afterward, you learn how the professional handled it and their key takeaways.

HBS Online’s adaptation of the case method incorporates the famed HBS “cold call,” in which you’re called on at random to make a decision without time to prepare.

“Learning came to life!” said Sheneka Balogun , chief administration officer and chief of staff at LeMoyne-Owen College, of her experience taking the Credential of Readiness (CORe) program . “The videos from the professors, the interactive cold calls where you were randomly selected to participate, and the case studies that enhanced and often captured the essence of objectives and learning goals were all embedded in each module. This made learning fun, engaging, and student-friendly.”

If you’re considering taking a course that leverages the case study method, here are five benefits you could experience.

5 Benefits of Learning Through Case Studies

1. take new perspectives.

The case method prompts you to consider a scenario from another person’s perspective. To work through the situation and come up with a solution, you must consider their circumstances, limitations, risk tolerance, stakeholders, resources, and potential consequences to assess how to respond.

Taking on new perspectives not only can help you navigate your own challenges but also others’. Putting yourself in someone else’s situation to understand their motivations and needs can go a long way when collaborating with stakeholders.

2. Hone Your Decision-Making Skills

Another skill you can build is the ability to make decisions effectively . The case study method forces you to use limited information to decide how to handle a problem—just like in the real world.

Throughout your career, you’ll need to make difficult decisions with incomplete or imperfect information—and sometimes, you won’t feel qualified to do so. Learning through the case method allows you to practice this skill in a low-stakes environment. When facing a real challenge, you’ll be better prepared to think quickly, collaborate with others, and present and defend your solution.

3. Become More Open-Minded

As you collaborate with peers on responses, it becomes clear that not everyone solves problems the same way. Exposing yourself to various approaches and perspectives can help you become a more open-minded professional.

When you’re part of a diverse group of learners from around the world, your experiences, cultures, and backgrounds contribute to a range of opinions on each case.

On the HBS Online course platform, you’re prompted to view and comment on others’ responses, and discussion is encouraged. This practice of considering others’ perspectives can make you more receptive in your career.

“You’d be surprised at how much you can learn from your peers,” said Ratnaditya Jonnalagadda , a software engineer who took CORe.

In addition to interacting with peers in the course platform, Jonnalagadda was part of the HBS Online Community , where he networked with other professionals and continued discussions sparked by course content.

“You get to understand your peers better, and students share examples of businesses implementing a concept from a module you just learned,” Jonnalagadda said. “It’s a very good way to cement the concepts in one's mind.”

4. Enhance Your Curiosity

One byproduct of taking on different perspectives is that it enables you to picture yourself in various roles, industries, and business functions.

“Each case offers an opportunity for students to see what resonates with them, what excites them, what bores them, which role they could imagine inhabiting in their careers,” says former HBS Dean Nitin Nohria in the Harvard Business Review . “Cases stimulate curiosity about the range of opportunities in the world and the many ways that students can make a difference as leaders.”

Through the case method, you can “try on” roles you may not have considered and feel more prepared to change or advance your career .

5. Build Your Self-Confidence

Finally, learning through the case study method can build your confidence. Each time you assume a business leader’s perspective, aim to solve a new challenge, and express and defend your opinions and decisions to peers, you prepare to do the same in your career.

According to a 2022 City Square Associates survey , 84 percent of HBS Online learners report feeling more confident making business decisions after taking a course.

“Self-confidence is difficult to teach or coach, but the case study method seems to instill it in people,” Nohria says in the Harvard Business Review . “There may well be other ways of learning these meta-skills, such as the repeated experience gained through practice or guidance from a gifted coach. However, under the direction of a masterful teacher, the case method can engage students and help them develop powerful meta-skills like no other form of teaching.”

How to Experience the Case Study Method

If the case method seems like a good fit for your learning style, experience it for yourself by taking an HBS Online course. Offerings span seven subject areas, including:

• Business essentials
• Leadership and management
• Entrepreneurship and innovation
• Finance and accounting
• Business in society

No matter which course or credential program you choose, you’ll examine case studies from real business professionals, work through their challenges alongside peers, and gain valuable insights to apply to your career.

Are you interested in discovering how HBS Online can help advance your career? Explore our course catalog and download our free guide —complete with interactive workbook sections—to determine if online learning is right for you and which course to take.

About the Author

The Ultimate Guide to Qualitative Research - Part 1: The Basics

• Introduction and overview
• What is qualitative research?
• What is qualitative data?
• Examples of qualitative data
• Qualitative vs. quantitative research
• Mixed methods
• Qualitative research preparation
• Theoretical perspective
• Theoretical framework
• Literature reviews

Research question

• Conceptual framework
• Conceptual vs. theoretical framework

Data collection

• Qualitative research methods
• Focus groups
• Observational research

What is a case study?

Applications for case study research, what is a good case study, process of case study design, benefits and limitations of case studies.

• Ethnographical research
• Ethical considerations
• Confidentiality and privacy
• Power dynamics
• Reflexivity

Case studies

Case studies are essential to qualitative research , offering a lens through which researchers can investigate complex phenomena within their real-life contexts. This chapter explores the concept, purpose, applications, examples, and types of case studies and provides guidance on how to conduct case study research effectively.

Whereas quantitative methods look at phenomena at scale, case study research looks at a concept or phenomenon in considerable detail. While analyzing a single case can help understand one perspective regarding the object of research inquiry, analyzing multiple cases can help obtain a more holistic sense of the topic or issue. Let's provide a basic definition of a case study, then explore its characteristics and role in the qualitative research process.

Definition of a case study

A case study in qualitative research is a strategy of inquiry that involves an in-depth investigation of a phenomenon within its real-world context. It provides researchers with the opportunity to acquire an in-depth understanding of intricate details that might not be as apparent or accessible through other methods of research. The specific case or cases being studied can be a single person, group, or organization – demarcating what constitutes a relevant case worth studying depends on the researcher and their research question .

Among qualitative research methods , a case study relies on multiple sources of evidence, such as documents, artifacts, interviews , or observations , to present a complete and nuanced understanding of the phenomenon under investigation. The objective is to illuminate the readers' understanding of the phenomenon beyond its abstract statistical or theoretical explanations.

Characteristics of case studies

Case studies typically possess a number of distinct characteristics that set them apart from other research methods. These characteristics include a focus on holistic description and explanation, flexibility in the design and data collection methods, reliance on multiple sources of evidence, and emphasis on the context in which the phenomenon occurs.

Furthermore, case studies can often involve a longitudinal examination of the case, meaning they study the case over a period of time. These characteristics allow case studies to yield comprehensive, in-depth, and richly contextualized insights about the phenomenon of interest.

The role of case studies in research

Case studies hold a unique position in the broader landscape of research methods aimed at theory development. They are instrumental when the primary research interest is to gain an intensive, detailed understanding of a phenomenon in its real-life context.

In addition, case studies can serve different purposes within research - they can be used for exploratory, descriptive, or explanatory purposes, depending on the research question and objectives. This flexibility and depth make case studies a valuable tool in the toolkit of qualitative researchers.

Remember, a well-conducted case study can offer a rich, insightful contribution to both academic and practical knowledge through theory development or theory verification, thus enhancing our understanding of complex phenomena in their real-world contexts.

What is the purpose of a case study?

Case study research aims for a more comprehensive understanding of phenomena, requiring various research methods to gather information for qualitative analysis . Ultimately, a case study can allow the researcher to gain insight into a particular object of inquiry and develop a theoretical framework relevant to the research inquiry.

Why use case studies in qualitative research?

Using case studies as a research strategy depends mainly on the nature of the research question and the researcher's access to the data.

Conducting case study research provides a level of detail and contextual richness that other research methods might not offer. They are beneficial when there's a need to understand complex social phenomena within their natural contexts.

The explanatory, exploratory, and descriptive roles of case studies

Case studies can take on various roles depending on the research objectives. They can be exploratory when the research aims to discover new phenomena or define new research questions; they are descriptive when the objective is to depict a phenomenon within its context in a detailed manner; and they can be explanatory if the goal is to understand specific relationships within the studied context. Thus, the versatility of case studies allows researchers to approach their topic from different angles, offering multiple ways to uncover and interpret the data .

The impact of case studies on knowledge development

Case studies play a significant role in knowledge development across various disciplines. Analysis of cases provides an avenue for researchers to explore phenomena within their context based on the collected data.

This can result in the production of rich, practical insights that can be instrumental in both theory-building and practice. Case studies allow researchers to delve into the intricacies and complexities of real-life situations, uncovering insights that might otherwise remain hidden.

Types of case studies

In qualitative research , a case study is not a one-size-fits-all approach. Depending on the nature of the research question and the specific objectives of the study, researchers might choose to use different types of case studies. These types differ in their focus, methodology, and the level of detail they provide about the phenomenon under investigation.

Understanding these types is crucial for selecting the most appropriate approach for your research project and effectively achieving your research goals. Let's briefly look at the main types of case studies.

Exploratory case studies

Exploratory case studies are typically conducted to develop a theory or framework around an understudied phenomenon. They can also serve as a precursor to a larger-scale research project. Exploratory case studies are useful when a researcher wants to identify the key issues or questions which can spur more extensive study or be used to develop propositions for further research. These case studies are characterized by flexibility, allowing researchers to explore various aspects of a phenomenon as they emerge, which can also form the foundation for subsequent studies.

Descriptive case studies

Descriptive case studies aim to provide a complete and accurate representation of a phenomenon or event within its context. These case studies are often based on an established theoretical framework, which guides how data is collected and analyzed. The researcher is concerned with describing the phenomenon in detail, as it occurs naturally, without trying to influence or manipulate it.

Explanatory case studies

Explanatory case studies are focused on explanation - they seek to clarify how or why certain phenomena occur. Often used in complex, real-life situations, they can be particularly valuable in clarifying causal relationships among concepts and understanding the interplay between different factors within a specific context.

Intrinsic, instrumental, and collective case studies

These three categories of case studies focus on the nature and purpose of the study. An intrinsic case study is conducted when a researcher has an inherent interest in the case itself. Instrumental case studies are employed when the case is used to provide insight into a particular issue or phenomenon. A collective case study, on the other hand, involves studying multiple cases simultaneously to investigate some general phenomena.

Each type of case study serves a different purpose and has its own strengths and challenges. The selection of the type should be guided by the research question and objectives, as well as the context and constraints of the research.

The flexibility, depth, and contextual richness offered by case studies make this approach an excellent research method for various fields of study. They enable researchers to investigate real-world phenomena within their specific contexts, capturing nuances that other research methods might miss. Across numerous fields, case studies provide valuable insights into complex issues.

Critical information systems research

Case studies provide a detailed understanding of the role and impact of information systems in different contexts. They offer a platform to explore how information systems are designed, implemented, and used and how they interact with various social, economic, and political factors. Case studies in this field often focus on examining the intricate relationship between technology, organizational processes, and user behavior, helping to uncover insights that can inform better system design and implementation.

Health research

Health research is another field where case studies are highly valuable. They offer a way to explore patient experiences, healthcare delivery processes, and the impact of various interventions in a real-world context.

Case studies can provide a deep understanding of a patient's journey, giving insights into the intricacies of disease progression, treatment effects, and the psychosocial aspects of health and illness.

Asthma research studies

Specifically within medical research, studies on asthma often employ case studies to explore the individual and environmental factors that influence asthma development, management, and outcomes. A case study can provide rich, detailed data about individual patients' experiences, from the triggers and symptoms they experience to the effectiveness of various management strategies. This can be crucial for developing patient-centered asthma care approaches.

Other fields

Apart from the fields mentioned, case studies are also extensively used in business and management research, education research, and political sciences, among many others. They provide an opportunity to delve into the intricacies of real-world situations, allowing for a comprehensive understanding of various phenomena.

Case studies, with their depth and contextual focus, offer unique insights across these varied fields. They allow researchers to illuminate the complexities of real-life situations, contributing to both theory and practice.

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Understanding the key elements of case study design is crucial for conducting rigorous and impactful case study research. A well-structured design guides the researcher through the process, ensuring that the study is methodologically sound and its findings are reliable and valid. The main elements of case study design include the research question , propositions, units of analysis, and the logic linking the data to the propositions.

The research question is the foundation of any research study. A good research question guides the direction of the study and informs the selection of the case, the methods of collecting data, and the analysis techniques. A well-formulated research question in case study research is typically clear, focused, and complex enough to merit further detailed examination of the relevant case(s).

Propositions

Propositions, though not necessary in every case study, provide a direction by stating what we might expect to find in the data collected. They guide how data is collected and analyzed by helping researchers focus on specific aspects of the case. They are particularly important in explanatory case studies, which seek to understand the relationships among concepts within the studied phenomenon.

Units of analysis

The unit of analysis refers to the case, or the main entity or entities that are being analyzed in the study. In case study research, the unit of analysis can be an individual, a group, an organization, a decision, an event, or even a time period. It's crucial to clearly define the unit of analysis, as it shapes the qualitative data analysis process by allowing the researcher to analyze a particular case and synthesize analysis across multiple case studies to draw conclusions.

Argumentation

This refers to the inferential model that allows researchers to draw conclusions from the data. The researcher needs to ensure that there is a clear link between the data, the propositions (if any), and the conclusions drawn. This argumentation is what enables the researcher to make valid and credible inferences about the phenomenon under study.

Understanding and carefully considering these elements in the design phase of a case study can significantly enhance the quality of the research. It can help ensure that the study is methodologically sound and its findings contribute meaningful insights about the case.

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Conducting a case study involves several steps, from defining the research question and selecting the case to collecting and analyzing data . This section outlines these key stages, providing a practical guide on how to conduct case study research.

Defining the research question

The first step in case study research is defining a clear, focused research question. This question should guide the entire research process, from case selection to analysis. It's crucial to ensure that the research question is suitable for a case study approach. Typically, such questions are exploratory or descriptive in nature and focus on understanding a phenomenon within its real-life context.

Selecting and defining the case

The selection of the case should be based on the research question and the objectives of the study. It involves choosing a unique example or a set of examples that provide rich, in-depth data about the phenomenon under investigation. After selecting the case, it's crucial to define it clearly, setting the boundaries of the case, including the time period and the specific context.

Previous research can help guide the case study design. When considering a case study, an example of a case could be taken from previous case study research and used to define cases in a new research inquiry. Considering recently published examples can help understand how to select and define cases effectively.

Developing a detailed case study protocol

A case study protocol outlines the procedures and general rules to be followed during the case study. This includes the data collection methods to be used, the sources of data, and the procedures for analysis. Having a detailed case study protocol ensures consistency and reliability in the study.

The protocol should also consider how to work with the people involved in the research context to grant the research team access to collecting data. As mentioned in previous sections of this guide, establishing rapport is an essential component of qualitative research as it shapes the overall potential for collecting and analyzing data.

Collecting data

Gathering data in case study research often involves multiple sources of evidence, including documents, archival records, interviews, observations, and physical artifacts. This allows for a comprehensive understanding of the case. The process for gathering data should be systematic and carefully documented to ensure the reliability and validity of the study.

Analyzing and interpreting data

The next step is analyzing the data. This involves organizing the data , categorizing it into themes or patterns , and interpreting these patterns to answer the research question. The analysis might also involve comparing the findings with prior research or theoretical propositions.

Writing the case study report

The final step is writing the case study report . This should provide a detailed description of the case, the data, the analysis process, and the findings. The report should be clear, organized, and carefully written to ensure that the reader can understand the case and the conclusions drawn from it.

Each of these steps is crucial in ensuring that the case study research is rigorous, reliable, and provides valuable insights about the case.

The type, depth, and quality of data in your study can significantly influence the validity and utility of the study. In case study research, data is usually collected from multiple sources to provide a comprehensive and nuanced understanding of the case. This section will outline the various methods of collecting data used in case study research and discuss considerations for ensuring the quality of the data.

Interviews are a common method of gathering data in case study research. They can provide rich, in-depth data about the perspectives, experiences, and interpretations of the individuals involved in the case. Interviews can be structured , semi-structured , or unstructured , depending on the research question and the degree of flexibility needed.

Observations

Observations involve the researcher observing the case in its natural setting, providing first-hand information about the case and its context. Observations can provide data that might not be revealed in interviews or documents, such as non-verbal cues or contextual information.

Documents and artifacts

Documents and archival records provide a valuable source of data in case study research. They can include reports, letters, memos, meeting minutes, email correspondence, and various public and private documents related to the case.

These records can provide historical context, corroborate evidence from other sources, and offer insights into the case that might not be apparent from interviews or observations.

Physical artifacts refer to any physical evidence related to the case, such as tools, products, or physical environments. These artifacts can provide tangible insights into the case, complementing the data gathered from other sources.

Ensuring the quality of data collection

Determining the quality of data in case study research requires careful planning and execution. It's crucial to ensure that the data is reliable, accurate, and relevant to the research question. This involves selecting appropriate methods of collecting data, properly training interviewers or observers, and systematically recording and storing the data. It also includes considering ethical issues related to collecting and handling data, such as obtaining informed consent and ensuring the privacy and confidentiality of the participants.

Data analysis

Analyzing case study research involves making sense of the rich, detailed data to answer the research question. This process can be challenging due to the volume and complexity of case study data. However, a systematic and rigorous approach to analysis can ensure that the findings are credible and meaningful. This section outlines the main steps and considerations in analyzing data in case study research.

Organizing the data

The first step in the analysis is organizing the data. This involves sorting the data into manageable sections, often according to the data source or the theme. This step can also involve transcribing interviews, digitizing physical artifacts, or organizing observational data.

Categorizing and coding the data

Once the data is organized, the next step is to categorize or code the data. This involves identifying common themes, patterns, or concepts in the data and assigning codes to relevant data segments. Coding can be done manually or with the help of software tools, and in either case, qualitative analysis software can greatly facilitate the entire coding process. Coding helps to reduce the data to a set of themes or categories that can be more easily analyzed.

Identifying patterns and themes

After coding the data, the researcher looks for patterns or themes in the coded data. This involves comparing and contrasting the codes and looking for relationships or patterns among them. The identified patterns and themes should help answer the research question.

Interpreting the data

Once patterns and themes have been identified, the next step is to interpret these findings. This involves explaining what the patterns or themes mean in the context of the research question and the case. This interpretation should be grounded in the data, but it can also involve drawing on theoretical concepts or prior research.

Verification of the data

The last step in the analysis is verification. This involves checking the accuracy and consistency of the analysis process and confirming that the findings are supported by the data. This can involve re-checking the original data, checking the consistency of codes, or seeking feedback from research participants or peers.

Like any research method , case study research has its strengths and limitations. Researchers must be aware of these, as they can influence the design, conduct, and interpretation of the study.

Understanding the strengths and limitations of case study research can also guide researchers in deciding whether this approach is suitable for their research question . This section outlines some of the key strengths and limitations of case study research.

Benefits include the following:

• Rich, detailed data: One of the main strengths of case study research is that it can generate rich, detailed data about the case. This can provide a deep understanding of the case and its context, which can be valuable in exploring complex phenomena.
• Flexibility: Case study research is flexible in terms of design , data collection , and analysis . A sufficient degree of flexibility allows the researcher to adapt the study according to the case and the emerging findings.
• Real-world context: Case study research involves studying the case in its real-world context, which can provide valuable insights into the interplay between the case and its context.
• Multiple sources of evidence: Case study research often involves collecting data from multiple sources , which can enhance the robustness and validity of the findings.

On the other hand, researchers should consider the following limitations:

• Generalizability: A common criticism of case study research is that its findings might not be generalizable to other cases due to the specificity and uniqueness of each case.
• Time and resource intensive: Case study research can be time and resource intensive due to the depth of the investigation and the amount of collected data.
• Complexity of analysis: The rich, detailed data generated in case study research can make analyzing the data challenging.
• Subjectivity: Given the nature of case study research, there may be a higher degree of subjectivity in interpreting the data , so researchers need to reflect on this and transparently convey to audiences how the research was conducted.

Being aware of these strengths and limitations can help researchers design and conduct case study research effectively and interpret and report the findings appropriately.

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• Open access
• Published: 10 November 2020

Case study research for better evaluations of complex interventions: rationale and challenges

• Sara Paparini   ORCID: orcid.org/0000-0002-1909-2481 1 ,
• Judith Green 2 ,
• Chrysanthi Papoutsi 1 ,
• Jamie Murdoch 3 ,
• Mark Petticrew 4 ,
• Trish Greenhalgh 1 ,
• Benjamin Hanckel 5 &
• Sara Shaw 1  

BMC Medicine volume  18 , Article number:  301 ( 2020 ) Cite this article

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The need for better methods for evaluation in health research has been widely recognised. The ‘complexity turn’ has drawn attention to the limitations of relying on causal inference from randomised controlled trials alone for understanding whether, and under which conditions, interventions in complex systems improve health services or the public health, and what mechanisms might link interventions and outcomes. We argue that case study research—currently denigrated as poor evidence—is an under-utilised resource for not only providing evidence about context and transferability, but also for helping strengthen causal inferences when pathways between intervention and effects are likely to be non-linear.

Case study research, as an overall approach, is based on in-depth explorations of complex phenomena in their natural, or real-life, settings. Empirical case studies typically enable dynamic understanding of complex challenges and provide evidence about causal mechanisms and the necessary and sufficient conditions (contexts) for intervention implementation and effects. This is essential evidence not just for researchers concerned about internal and external validity, but also research users in policy and practice who need to know what the likely effects of complex programmes or interventions will be in their settings. The health sciences have much to learn from scholarship on case study methodology in the social sciences. However, there are multiple challenges in fully exploiting the potential learning from case study research. First are misconceptions that case study research can only provide exploratory or descriptive evidence. Second, there is little consensus about what a case study is, and considerable diversity in how empirical case studies are conducted and reported. Finally, as case study researchers typically (and appropriately) focus on thick description (that captures contextual detail), it can be challenging to identify the key messages related to intervention evaluation from case study reports.

Whilst the diversity of published case studies in health services and public health research is rich and productive, we recommend further clarity and specific methodological guidance for those reporting case study research for evaluation audiences.

Peer Review reports

The need for methodological development to address the most urgent challenges in health research has been well-documented. Many of the most pressing questions for public health research, where the focus is on system-level determinants [ 1 , 2 ], and for health services research, where provisions typically vary across sites and are provided through interlocking networks of services [ 3 ], require methodological approaches that can attend to complexity. The need for methodological advance has arisen, in part, as a result of the diminishing returns from randomised controlled trials (RCTs) where they have been used to answer questions about the effects of interventions in complex systems [ 4 , 5 , 6 ]. In conditions of complexity, there is limited value in maintaining the current orientation to experimental trial designs in the health sciences as providing ‘gold standard’ evidence of effect.

There are increasing calls for methodological pluralism [ 7 , 8 ], with the recognition that complex intervention and context are not easily or usefully separated (as is often the situation when using trial design), and that system interruptions may have effects that are not reducible to linear causal pathways between intervention and outcome. These calls are reflected in a shifting and contested discourse of trial design, seen with the emergence of realist [ 9 ], adaptive and hybrid (types 1, 2 and 3) [ 10 , 11 ] trials that blend studies of effectiveness with a close consideration of the contexts of implementation. Similarly, process evaluation has now become a core component of complex healthcare intervention trials, reflected in MRC guidance on how to explore implementation, causal mechanisms and context [ 12 ].

Evidence about the context of an intervention is crucial for questions of external validity. As Woolcock [ 4 ] notes, even if RCT designs are accepted as robust for maximising internal validity, questions of transferability (how well the intervention works in different contexts) and generalisability (how well the intervention can be scaled up) remain unanswered [ 5 , 13 ]. For research evidence to have impact on policy and systems organisation, and thus to improve population and patient health, there is an urgent need for better methods for strengthening external validity, including a better understanding of the relationship between intervention and context [ 14 ].

Policymakers, healthcare commissioners and other research users require credible evidence of relevance to their settings and populations [ 15 ], to perform what Rosengarten and Savransky [ 16 ] call ‘careful abstraction’ to the locales that matter for them. They also require robust evidence for understanding complex causal pathways. Case study research, currently under-utilised in public health and health services evaluation, can offer considerable potential for strengthening faith in both external and internal validity. For example, in an empirical case study of how the policy of free bus travel had specific health effects in London, UK, a quasi-experimental evaluation (led by JG) identified how important aspects of context (a good public transport system) and intervention (that it was universal) were necessary conditions for the observed effects, thus providing useful, actionable evidence for decision-makers in other contexts [ 17 ].

The overall approach of case study research is based on the in-depth exploration of complex phenomena in their natural, or ‘real-life’, settings. Empirical case studies typically enable dynamic understanding of complex challenges rather than restricting the focus on narrow problem delineations and simple fixes. Case study research is a diverse and somewhat contested field, with multiple definitions and perspectives grounded in different ways of viewing the world, and involving different combinations of methods. In this paper, we raise awareness of such plurality and highlight the contribution that case study research can make to the evaluation of complex system-level interventions. We review some of the challenges in exploiting the current evidence base from empirical case studies and conclude by recommending that further guidance and minimum reporting criteria for evaluation using case studies, appropriate for audiences in the health sciences, can enhance the take-up of evidence from case study research.

Case study research offers evidence about context, causal inference in complex systems and implementation

Well-conducted and described empirical case studies provide evidence on context, complexity and mechanisms for understanding how, where and why interventions have their observed effects. Recognition of the importance of context for understanding the relationships between interventions and outcomes is hardly new. In 1943, Canguilhem berated an over-reliance on experimental designs for determining universal physiological laws: ‘As if one could determine a phenomenon’s essence apart from its conditions! As if conditions were a mask or frame which changed neither the face nor the picture!’ ([ 18 ] p126). More recently, a concern with context has been expressed in health systems and public health research as part of what has been called the ‘complexity turn’ [ 1 ]: a recognition that many of the most enduring challenges for developing an evidence base require a consideration of system-level effects [ 1 ] and the conceptualisation of interventions as interruptions in systems [ 19 ].

The case study approach is widely recognised as offering an invaluable resource for understanding the dynamic and evolving influence of context on complex, system-level interventions [ 20 , 21 , 22 , 23 ]. Empirically, case studies can directly inform assessments of where, when, how and for whom interventions might be successfully implemented, by helping to specify the necessary and sufficient conditions under which interventions might have effects and to consolidate learning on how interdependencies, emergence and unpredictability can be managed to achieve and sustain desired effects. Case study research has the potential to address four objectives for improving research and reporting of context recently set out by guidance on taking account of context in population health research [ 24 ], that is to (1) improve the appropriateness of intervention development for specific contexts, (2) improve understanding of ‘how’ interventions work, (3) better understand how and why impacts vary across contexts and (4) ensure reports of intervention studies are most useful for decision-makers and researchers.

However, evaluations of complex healthcare interventions have arguably not exploited the full potential of case study research and can learn much from other disciplines. For evaluative research, exploratory case studies have had a traditional role of providing data on ‘process’, or initial ‘hypothesis-generating’ scoping, but might also have an increasing salience for explanatory aims. Across the social and political sciences, different kinds of case studies are undertaken to meet diverse aims (description, exploration or explanation) and across different scales (from small N qualitative studies that aim to elucidate processes, or provide thick description, to more systematic techniques designed for medium-to-large N cases).

Case studies with explanatory aims vary in terms of their positioning within mixed-methods projects, with designs including (but not restricted to) (1) single N of 1 studies of interventions in specific contexts, where the overall design is a case study that may incorporate one or more (randomised or not) comparisons over time and between variables within the case; (2) a series of cases conducted or synthesised to provide explanation from variations between cases; and (3) case studies of particular settings within RCT or quasi-experimental designs to explore variation in effects or implementation.

Detailed qualitative research (typically done as ‘case studies’ within process evaluations) provides evidence for the plausibility of mechanisms [ 25 ], offering theoretical generalisations for how interventions may function under different conditions. Although RCT designs reduce many threats to internal validity, the mechanisms of effect remain opaque, particularly when the causal pathways between ‘intervention’ and ‘effect’ are long and potentially non-linear: case study research has a more fundamental role here, in providing detailed observational evidence for causal claims [ 26 ] as well as producing a rich, nuanced picture of tensions and multiple perspectives [ 8 ].

Longitudinal or cross-case analysis may be best suited for evidence generation in system-level evaluative research. Turner [ 27 ], for instance, reflecting on the complex processes in major system change, has argued for the need for methods that integrate learning across cases, to develop theoretical knowledge that would enable inferences beyond the single case, and to develop generalisable theory about organisational and structural change in health systems. Qualitative Comparative Analysis (QCA) [ 28 ] is one such formal method for deriving causal claims, using set theory mathematics to integrate data from empirical case studies to answer questions about the configurations of causal pathways linking conditions to outcomes [ 29 , 30 ].

Nonetheless, the single N case study, too, provides opportunities for theoretical development [ 31 ], and theoretical generalisation or analytical refinement [ 32 ]. How ‘the case’ and ‘context’ are conceptualised is crucial here. Findings from the single case may seem to be confined to its intrinsic particularities in a specific and distinct context [ 33 ]. However, if such context is viewed as exemplifying wider social and political forces, the single case can be ‘telling’, rather than ‘typical’, and offer insight into a wider issue [ 34 ]. Internal comparisons within the case can offer rich possibilities for logical inferences about causation [ 17 ]. Further, case studies of any size can be used for theory testing through refutation [ 22 ]. The potential lies, then, in utilising the strengths and plurality of case study to support theory-driven research within different methodological paradigms.

Evaluation research in health has much to learn from a range of social sciences where case study methodology has been used to develop various kinds of causal inference. For instance, Gerring [ 35 ] expands on the within-case variations utilised to make causal claims. For Gerring [ 35 ], case studies come into their own with regard to invariant or strong causal claims (such as X is a necessary and/or sufficient condition for Y) rather than for probabilistic causal claims. For the latter (where experimental methods might have an advantage in estimating effect sizes), case studies offer evidence on mechanisms: from observations of X affecting Y, from process tracing or from pattern matching. Case studies also support the study of emergent causation, that is, the multiple interacting properties that account for particular and unexpected outcomes in complex systems, such as in healthcare [ 8 ].

Finally, efficacy (or beliefs about efficacy) is not the only contributor to intervention uptake, with a range of organisational and policy contingencies affecting whether an intervention is likely to be rolled out in practice. Case study research is, therefore, invaluable for learning about contextual contingencies and identifying the conditions necessary for interventions to become normalised (i.e. implemented routinely) in practice [ 36 ].

The challenges in exploiting evidence from case study research

At present, there are significant challenges in exploiting the benefits of case study research in evaluative health research, which relate to status, definition and reporting. Case study research has been marginalised at the bottom of an evidence hierarchy, seen to offer little by way of explanatory power, if nonetheless useful for adding descriptive data on process or providing useful illustrations for policymakers [ 37 ]. This is an opportune moment to revisit this low status. As health researchers are increasingly charged with evaluating ‘natural experiments’—the use of face masks in the response to the COVID-19 pandemic being a recent example [ 38 ]—rather than interventions that take place in settings that can be controlled, research approaches using methods to strengthen causal inference that does not require randomisation become more relevant.

A second challenge for improving the use of case study evidence in evaluative health research is that, as we have seen, what is meant by ‘case study’ varies widely, not only across but also within disciplines. There is indeed little consensus amongst methodologists as to how to define ‘a case study’. Definitions focus, variously, on small sample size or lack of control over the intervention (e.g. [ 39 ] p194), on in-depth study and context [ 40 , 41 ], on the logic of inference used [ 35 ] or on distinct research strategies which incorporate a number of methods to address questions of ‘how’ and ‘why’ [ 42 ]. Moreover, definitions developed for specific disciplines do not capture the range of ways in which case study research is carried out across disciplines. Multiple definitions of case study reflect the richness and diversity of the approach. However, evidence suggests that a lack of consensus across methodologists results in some of the limitations of published reports of empirical case studies [ 43 , 44 ]. Hyett and colleagues [ 43 ], for instance, reviewing reports in qualitative journals, found little match between methodological definitions of case study research and how authors used the term.

This raises the third challenge we identify that case study reports are typically not written in ways that are accessible or useful for the evaluation research community and policymakers. Case studies may not appear in journals widely read by those in the health sciences, either because space constraints preclude the reporting of rich, thick descriptions, or because of the reported lack of willingness of some biomedical journals to publish research that uses qualitative methods [ 45 ], signalling the persistence of the aforementioned evidence hierarchy. Where they do, however, the term ‘case study’ is used to indicate, interchangeably, a qualitative study, an N of 1 sample, or a multi-method, in-depth analysis of one example from a population of phenomena. Definitions of what constitutes the ‘case’ are frequently lacking and appear to be used as a synonym for the settings in which the research is conducted. Despite offering insights for evaluation, the primary aims may not have been evaluative, so the implications may not be explicitly drawn out. Indeed, some case study reports might properly be aiming for thick description without necessarily seeking to inform about context or causality.

Acknowledging plurality and developing guidance

We recognise that definitional and methodological plurality is not only inevitable, but also a necessary and creative reflection of the very different epistemological and disciplinary origins of health researchers, and the aims they have in doing and reporting case study research. Indeed, to provide some clarity, Thomas [ 46 ] has suggested a typology of subject/purpose/approach/process for classifying aims (e.g. evaluative or exploratory), sample rationale and selection and methods for data generation of case studies. We also recognise that the diversity of methods used in case study research, and the necessary focus on narrative reporting, does not lend itself to straightforward development of formal quality or reporting criteria.

Existing checklists for reporting case study research from the social sciences—for example Lincoln and Guba’s [ 47 ] and Stake’s [ 33 ]—are primarily orientated to the quality of narrative produced, and the extent to which they encapsulate thick description, rather than the more pragmatic issues of implications for intervention effects. Those designed for clinical settings, such as the CARE (CAse REports) guidelines, provide specific reporting guidelines for medical case reports about single, or small groups of patients [ 48 ], not for case study research.

The Design of Case Study Research in Health Care (DESCARTE) model [ 44 ] suggests a series of questions to be asked of a case study researcher (including clarity about the philosophy underpinning their research), study design (with a focus on case definition) and analysis (to improve process). The model resembles toolkits for enhancing the quality and robustness of qualitative and mixed-methods research reporting, and it is usefully open-ended and non-prescriptive. However, even if it does include some reflections on context, the model does not fully address aspects of context, logic and causal inference that are perhaps most relevant for evaluative research in health.

Hence, for evaluative research where the aim is to report empirical findings in ways that are intended to be pragmatically useful for health policy and practice, this may be an opportune time to consider how to best navigate plurality around what is (minimally) important to report when publishing empirical case studies, especially with regards to the complex relationships between context and interventions, information that case study research is well placed to provide.

The conventional scientific quest for certainty, predictability and linear causality (maximised in RCT designs) has to be augmented by the study of uncertainty, unpredictability and emergent causality [ 8 ] in complex systems. This will require methodological pluralism, and openness to broadening the evidence base to better understand both causality in and the transferability of system change intervention [ 14 , 20 , 23 , 25 ]. Case study research evidence is essential, yet is currently under exploited in the health sciences. If evaluative health research is to move beyond the current impasse on methods for understanding interventions as interruptions in complex systems, we need to consider in more detail how researchers can conduct and report empirical case studies which do aim to elucidate the contextual factors which interact with interventions to produce particular effects. To this end, supported by the UK’s Medical Research Council, we are embracing the challenge to develop guidance for case study researchers studying complex interventions. Following a meta-narrative review of the literature, we are planning a Delphi study to inform guidance that will, at minimum, cover the value of case study research for evaluating the interrelationship between context and complex system-level interventions; for situating and defining ‘the case’, and generalising from case studies; as well as provide specific guidance on conducting, analysing and reporting case study research. Our hope is that such guidance can support researchers evaluating interventions in complex systems to better exploit the diversity and richness of case study research.

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Abbreviations

Qualitative comparative analysis

Quasi-experimental design

Randomised controlled trial

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Home » Case Study – Methods, Examples and Guide

Case Study – Methods, Examples and Guide

Table of Contents

A case study is a research method that involves an in-depth examination and analysis of a particular phenomenon or case, such as an individual, organization, community, event, or situation.

It is a qualitative research approach that aims to provide a detailed and comprehensive understanding of the case being studied. Case studies typically involve multiple sources of data, including interviews, observations, documents, and artifacts, which are analyzed using various techniques, such as content analysis, thematic analysis, and grounded theory. The findings of a case study are often used to develop theories, inform policy or practice, or generate new research questions.

Types of Case Study

Types and Methods of Case Study are as follows:

Single-Case Study

A single-case study is an in-depth analysis of a single case. This type of case study is useful when the researcher wants to understand a specific phenomenon in detail.

For Example , A researcher might conduct a single-case study on a particular individual to understand their experiences with a particular health condition or a specific organization to explore their management practices. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a single-case study are often used to generate new research questions, develop theories, or inform policy or practice.

Multiple-Case Study

A multiple-case study involves the analysis of several cases that are similar in nature. This type of case study is useful when the researcher wants to identify similarities and differences between the cases.

For Example, a researcher might conduct a multiple-case study on several companies to explore the factors that contribute to their success or failure. The researcher collects data from each case, compares and contrasts the findings, and uses various techniques to analyze the data, such as comparative analysis or pattern-matching. The findings of a multiple-case study can be used to develop theories, inform policy or practice, or generate new research questions.

Exploratory Case Study

An exploratory case study is used to explore a new or understudied phenomenon. This type of case study is useful when the researcher wants to generate hypotheses or theories about the phenomenon.

For Example, a researcher might conduct an exploratory case study on a new technology to understand its potential impact on society. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as grounded theory or content analysis. The findings of an exploratory case study can be used to generate new research questions, develop theories, or inform policy or practice.

Descriptive Case Study

A descriptive case study is used to describe a particular phenomenon in detail. This type of case study is useful when the researcher wants to provide a comprehensive account of the phenomenon.

For Example, a researcher might conduct a descriptive case study on a particular community to understand its social and economic characteristics. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a descriptive case study can be used to inform policy or practice or generate new research questions.

Instrumental Case Study

An instrumental case study is used to understand a particular phenomenon that is instrumental in achieving a particular goal. This type of case study is useful when the researcher wants to understand the role of the phenomenon in achieving the goal.

For Example, a researcher might conduct an instrumental case study on a particular policy to understand its impact on achieving a particular goal, such as reducing poverty. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of an instrumental case study can be used to inform policy or practice or generate new research questions.

Case Study Data Collection Methods

Here are some common data collection methods for case studies:

Interviews involve asking questions to individuals who have knowledge or experience relevant to the case study. Interviews can be structured (where the same questions are asked to all participants) or unstructured (where the interviewer follows up on the responses with further questions). Interviews can be conducted in person, over the phone, or through video conferencing.

Observations

Observations involve watching and recording the behavior and activities of individuals or groups relevant to the case study. Observations can be participant (where the researcher actively participates in the activities) or non-participant (where the researcher observes from a distance). Observations can be recorded using notes, audio or video recordings, or photographs.

Documents can be used as a source of information for case studies. Documents can include reports, memos, emails, letters, and other written materials related to the case study. Documents can be collected from the case study participants or from public sources.

Surveys involve asking a set of questions to a sample of individuals relevant to the case study. Surveys can be administered in person, over the phone, through mail or email, or online. Surveys can be used to gather information on attitudes, opinions, or behaviors related to the case study.

Artifacts are physical objects relevant to the case study. Artifacts can include tools, equipment, products, or other objects that provide insights into the case study phenomenon.

How to conduct Case Study Research

Conducting a case study research involves several steps that need to be followed to ensure the quality and rigor of the study. Here are the steps to conduct case study research:

• Define the research questions: The first step in conducting a case study research is to define the research questions. The research questions should be specific, measurable, and relevant to the case study phenomenon under investigation.
• Select the case: The next step is to select the case or cases to be studied. The case should be relevant to the research questions and should provide rich and diverse data that can be used to answer the research questions.
• Collect data: Data can be collected using various methods, such as interviews, observations, documents, surveys, and artifacts. The data collection method should be selected based on the research questions and the nature of the case study phenomenon.
• Analyze the data: The data collected from the case study should be analyzed using various techniques, such as content analysis, thematic analysis, or grounded theory. The analysis should be guided by the research questions and should aim to provide insights and conclusions relevant to the research questions.
• Draw conclusions: The conclusions drawn from the case study should be based on the data analysis and should be relevant to the research questions. The conclusions should be supported by evidence and should be clearly stated.
• Validate the findings: The findings of the case study should be validated by reviewing the data and the analysis with participants or other experts in the field. This helps to ensure the validity and reliability of the findings.
• Write the report: The final step is to write the report of the case study research. The report should provide a clear description of the case study phenomenon, the research questions, the data collection methods, the data analysis, the findings, and the conclusions. The report should be written in a clear and concise manner and should follow the guidelines for academic writing.

Examples of Case Study

Here are some examples of case study research:

• The Hawthorne Studies : Conducted between 1924 and 1932, the Hawthorne Studies were a series of case studies conducted by Elton Mayo and his colleagues to examine the impact of work environment on employee productivity. The studies were conducted at the Hawthorne Works plant of the Western Electric Company in Chicago and included interviews, observations, and experiments.
• The Stanford Prison Experiment: Conducted in 1971, the Stanford Prison Experiment was a case study conducted by Philip Zimbardo to examine the psychological effects of power and authority. The study involved simulating a prison environment and assigning participants to the role of guards or prisoners. The study was controversial due to the ethical issues it raised.
• The Challenger Disaster: The Challenger Disaster was a case study conducted to examine the causes of the Space Shuttle Challenger explosion in 1986. The study included interviews, observations, and analysis of data to identify the technical, organizational, and cultural factors that contributed to the disaster.
• The Enron Scandal: The Enron Scandal was a case study conducted to examine the causes of the Enron Corporation’s bankruptcy in 2001. The study included interviews, analysis of financial data, and review of documents to identify the accounting practices, corporate culture, and ethical issues that led to the company’s downfall.
• The Fukushima Nuclear Disaster : The Fukushima Nuclear Disaster was a case study conducted to examine the causes of the nuclear accident that occurred at the Fukushima Daiichi Nuclear Power Plant in Japan in 2011. The study included interviews, analysis of data, and review of documents to identify the technical, organizational, and cultural factors that contributed to the disaster.

Application of Case Study

Case studies have a wide range of applications across various fields and industries. Here are some examples:

Business and Management

Case studies are widely used in business and management to examine real-life situations and develop problem-solving skills. Case studies can help students and professionals to develop a deep understanding of business concepts, theories, and best practices.

Case studies are used in healthcare to examine patient care, treatment options, and outcomes. Case studies can help healthcare professionals to develop critical thinking skills, diagnose complex medical conditions, and develop effective treatment plans.

Case studies are used in education to examine teaching and learning practices. Case studies can help educators to develop effective teaching strategies, evaluate student progress, and identify areas for improvement.

Social Sciences

Case studies are widely used in social sciences to examine human behavior, social phenomena, and cultural practices. Case studies can help researchers to develop theories, test hypotheses, and gain insights into complex social issues.

Law and Ethics

Case studies are used in law and ethics to examine legal and ethical dilemmas. Case studies can help lawyers, policymakers, and ethical professionals to develop critical thinking skills, analyze complex cases, and make informed decisions.

Purpose of Case Study

The purpose of a case study is to provide a detailed analysis of a specific phenomenon, issue, or problem in its real-life context. A case study is a qualitative research method that involves the in-depth exploration and analysis of a particular case, which can be an individual, group, organization, event, or community.

The primary purpose of a case study is to generate a comprehensive and nuanced understanding of the case, including its history, context, and dynamics. Case studies can help researchers to identify and examine the underlying factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and detailed understanding of the case, which can inform future research, practice, or policy.

Case studies can also serve other purposes, including:

• Illustrating a theory or concept: Case studies can be used to illustrate and explain theoretical concepts and frameworks, providing concrete examples of how they can be applied in real-life situations.
• Developing hypotheses: Case studies can help to generate hypotheses about the causal relationships between different factors and outcomes, which can be tested through further research.
• Providing insight into complex issues: Case studies can provide insights into complex and multifaceted issues, which may be difficult to understand through other research methods.
• Informing practice or policy: Case studies can be used to inform practice or policy by identifying best practices, lessons learned, or areas for improvement.

Advantages of Case Study Research

There are several advantages of case study research, including:

• In-depth exploration: Case study research allows for a detailed exploration and analysis of a specific phenomenon, issue, or problem in its real-life context. This can provide a comprehensive understanding of the case and its dynamics, which may not be possible through other research methods.
• Rich data: Case study research can generate rich and detailed data, including qualitative data such as interviews, observations, and documents. This can provide a nuanced understanding of the case and its complexity.
• Holistic perspective: Case study research allows for a holistic perspective of the case, taking into account the various factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and comprehensive understanding of the case.
• Theory development: Case study research can help to develop and refine theories and concepts by providing empirical evidence and concrete examples of how they can be applied in real-life situations.
• Practical application: Case study research can inform practice or policy by identifying best practices, lessons learned, or areas for improvement.
• Contextualization: Case study research takes into account the specific context in which the case is situated, which can help to understand how the case is influenced by the social, cultural, and historical factors of its environment.

Limitations of Case Study Research

There are several limitations of case study research, including:

• Limited generalizability : Case studies are typically focused on a single case or a small number of cases, which limits the generalizability of the findings. The unique characteristics of the case may not be applicable to other contexts or populations, which may limit the external validity of the research.
• Biased sampling: Case studies may rely on purposive or convenience sampling, which can introduce bias into the sample selection process. This may limit the representativeness of the sample and the generalizability of the findings.
• Subjectivity: Case studies rely on the interpretation of the researcher, which can introduce subjectivity into the analysis. The researcher’s own biases, assumptions, and perspectives may influence the findings, which may limit the objectivity of the research.
• Limited control: Case studies are typically conducted in naturalistic settings, which limits the control that the researcher has over the environment and the variables being studied. This may limit the ability to establish causal relationships between variables.
• Time-consuming: Case studies can be time-consuming to conduct, as they typically involve a detailed exploration and analysis of a specific case. This may limit the feasibility of conducting multiple case studies or conducting case studies in a timely manner.
• Resource-intensive: Case studies may require significant resources, including time, funding, and expertise. This may limit the ability of researchers to conduct case studies in resource-constrained settings.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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10 Case Study Advantages and Disadvantages

A case study in academic research is a detailed and in-depth examination of a specific instance or event, generally conducted through a qualitative approach to data.

The most common case study definition that I come across is is Robert K. Yin’s (2003, p. 13) quote provided below:

“An empirical inquiry that investigates a contemporary phenomenon within its real-life context, especially when the boundaries between phenomenon and context are not clearly evident.”

Researchers conduct case studies for a number of reasons, such as to explore complex phenomena within their real-life context, to look at a particularly interesting instance of a situation, or to dig deeper into something of interest identified in a wider-scale project.

While case studies render extremely interesting data, they have many limitations and are not suitable for all studies. One key limitation is that a case study’s findings are not usually generalizable to broader populations because one instance cannot be used to infer trends across populations.

Case Study Advantages and Disadvantages

1. in-depth analysis of complex phenomena.

Case study design allows researchers to delve deeply into intricate issues and situations.

By focusing on a specific instance or event, researchers can uncover nuanced details and layers of understanding that might be missed with other research methods, especially large-scale survey studies.

As Lee and Saunders (2017) argue,

“It allows that particular event to be studies in detail so that its unique qualities may be identified.”

This depth of analysis can provide rich insights into the underlying factors and dynamics of the studied phenomenon.

2. Holistic Understanding

Building on the above point, case studies can help us to understand a topic holistically and from multiple angles.

This means the researcher isn’t restricted to just examining a topic by using a pre-determined set of questions, as with questionnaires. Instead, researchers can use qualitative methods to delve into the many different angles, perspectives, and contextual factors related to the case study.

We can turn to Lee and Saunders (2017) again, who notes that case study researchers “develop a deep, holistic understanding of a particular phenomenon” with the intent of deeply understanding the phenomenon.

3. Examination of rare and Unusual Phenomena

We need to use case study methods when we stumble upon “rare and unusual” (Lee & Saunders, 2017) phenomena that would tend to be seen as mere outliers in population studies.

Take, for example, a child genius. A population study of all children of that child’s age would merely see this child as an outlier in the dataset, and this child may even be removed in order to predict overall trends.

So, to truly come to an understanding of this child and get insights into the environmental conditions that led to this child’s remarkable cognitive development, we need to do an in-depth study of this child specifically – so, we’d use a case study.

4. Helps Reveal the Experiences of Marginalzied Groups

Just as rare and unsual cases can be overlooked in population studies, so too can the experiences, beliefs, and perspectives of marginalized groups.

As Lee and Saunders (2017) argue, “case studies are also extremely useful in helping the expression of the voices of people whose interests are often ignored.”

Take, for example, the experiences of minority populations as they navigate healthcare systems. This was for many years a “hidden” phenomenon, not examined by researchers. It took case study designs to truly reveal this phenomenon, which helped to raise practitioners’ awareness of the importance of cultural sensitivity in medicine.

5. Ideal in Situations where Researchers cannot Control the Variables

Experimental designs – where a study takes place in a lab or controlled environment – are excellent for determining cause and effect . But not all studies can take place in controlled environments (Tetnowski, 2015).

When we’re out in the field doing observational studies or similar fieldwork, we don’t have the freedom to isolate dependent and independent variables. We need to use alternate methods.

Case studies are ideal in such situations.

A case study design will allow researchers to deeply immerse themselves in a setting (potentially combining it with methods such as ethnography or researcher observation) in order to see how phenomena take place in real-life settings.

6. Supports the generation of new theories or hypotheses

While large-scale quantitative studies such as cross-sectional designs and population surveys are excellent at testing theories and hypotheses on a large scale, they need a hypothesis to start off with!

This is where case studies – in the form of grounded research – come in. Often, a case study doesn’t start with a hypothesis. Instead, it ends with a hypothesis based upon the findings within a singular setting.

The deep analysis allows for hypotheses to emerge, which can then be taken to larger-scale studies in order to conduct further, more generalizable, testing of the hypothesis or theory.

7. Reveals the Unexpected

When a largescale quantitative research project has a clear hypothesis that it will test, it often becomes very rigid and has tunnel-vision on just exploring the hypothesis.

Of course, a structured scientific examination of the effects of specific interventions targeted at specific variables is extermely valuable.

But narrowly-focused studies often fail to shine a spotlight on unexpected and emergent data. Here, case studies come in very useful. Oftentimes, researchers set their eyes on a phenomenon and, when examining it closely with case studies, identify data and come to conclusions that are unprecedented, unforeseen, and outright surprising.

As Lars Meier (2009, p. 975) marvels, “where else can we become a part of foreign social worlds and have the chance to become aware of the unexpected?”

Disadvantages

1. not usually generalizable.

Case studies are not generalizable because they tend not to look at a broad enough corpus of data to be able to infer that there is a trend across a population.

As Yang (2022) argues, “by definition, case studies can make no claims to be typical.”

Case studies focus on one specific instance of a phenomenon. They explore the context, nuances, and situational factors that have come to bear on the case study. This is really useful for bringing to light important, new, and surprising information, as I’ve already covered.

But , it’s not often useful for generating data that has validity beyond the specific case study being examined.

2. Subjectivity in interpretation

Case studies usually (but not always) use qualitative data which helps to get deep into a topic and explain it in human terms, finding insights unattainable by quantitative data.

But qualitative data in case studies relies heavily on researcher interpretation. While researchers can be trained and work hard to focus on minimizing subjectivity (through methods like triangulation), it often emerges – some might argue it’s innevitable in qualitative studies.

So, a criticism of case studies could be that they’re more prone to subjectivity – and researchers need to take strides to address this in their studies.

3. Difficulty in replicating results

Case study research is often non-replicable because the study takes place in complex real-world settings where variables are not controlled.

So, when returning to a setting to re-do or attempt to replicate a study, we often find that the variables have changed to such an extent that replication is difficult. Furthermore, new researchers (with new subjective eyes) may catch things that the other readers overlooked.

Replication is even harder when researchers attempt to replicate a case study design in a new setting or with different participants.

Comprehension Quiz for Students

Question 1: What benefit do case studies offer when exploring the experiences of marginalized groups?

a) They provide generalizable data. b) They help express the voices of often-ignored individuals. c) They control all variables for the study. d) They always start with a clear hypothesis.

Question 2: Why might case studies be considered ideal for situations where researchers cannot control all variables?

a) They provide a structured scientific examination. b) They allow for generalizability across populations. c) They focus on one specific instance of a phenomenon. d) They allow for deep immersion in real-life settings.

Question 3: What is a primary disadvantage of case studies in terms of data applicability?

a) They always focus on the unexpected. b) They are not usually generalizable. c) They support the generation of new theories. d) They provide a holistic understanding.

Question 4: Why might case studies be considered more prone to subjectivity?

a) They always use quantitative data. b) They heavily rely on researcher interpretation, especially with qualitative data. c) They are always replicable. d) They look at a broad corpus of data.

Question 5: In what situations are experimental designs, such as those conducted in labs, most valuable?

a) When there’s a need to study rare and unusual phenomena. b) When a holistic understanding is required. c) When determining cause-and-effect relationships. d) When the study focuses on marginalized groups.

Question 6: Why is replication challenging in case study research?

a) Because they always use qualitative data. b) Because they tend to focus on a broad corpus of data. c) Due to the changing variables in complex real-world settings. d) Because they always start with a hypothesis.

Lee, B., & Saunders, M. N. K. (2017). Conducting Case Study Research for Business and Management Students. SAGE Publications.

Meir, L. (2009). Feasting on the Benefits of Case Study Research. In Mills, A. J., Wiebe, E., & Durepos, G. (Eds.). Encyclopedia of Case Study Research (Vol. 2). London: SAGE Publications.

Tetnowski, J. (2015). Qualitative case study research design.  Perspectives on fluency and fluency disorders ,  25 (1), 39-45. ( Source )

Yang, S. L. (2022). The War on Corruption in China: Local Reform and Innovation . Taylor & Francis.

Yin, R. (2003). Case Study research. Thousand Oaks, CA: Sage.

Chris Drew (PhD)

Dr. Chris Drew is the founder of the Helpful Professor. He holds a PhD in education and has published over 20 articles in scholarly journals. He is the former editor of the Journal of Learning Development in Higher Education. [Image Descriptor: Photo of Chris]

• Chris Drew (PhD) https://helpfulprofessor.com/author/chris-drew-phd/ 15 Top Stakeholders in Education
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Case Study Research Method in Psychology

Saul Mcleod, PhD

Editor-in-Chief for Simply Psychology

BSc (Hons) Psychology, MRes, PhD, University of Manchester

Saul Mcleod, PhD., is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.

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Olivia Guy-Evans, MSc

Associate Editor for Simply Psychology

BSc (Hons) Psychology, MSc Psychology of Education

Olivia Guy-Evans is a writer and associate editor for Simply Psychology. She has previously worked in healthcare and educational sectors.

On This Page:

Case studies are in-depth investigations of a person, group, event, or community. Typically, data is gathered from various sources using several methods (e.g., observations & interviews).

The case study research method originated in clinical medicine (the case history, i.e., the patient’s personal history). In psychology, case studies are often confined to the study of a particular individual.

The information is mainly biographical and relates to events in the individual’s past (i.e., retrospective), as well as to significant events that are currently occurring in his or her everyday life.

The case study is not a research method, but researchers select methods of data collection and analysis that will generate material suitable for case studies.

Freud (1909a, 1909b) conducted very detailed investigations into the private lives of his patients in an attempt to both understand and help them overcome their illnesses.

This makes it clear that the case study is a method that should only be used by a psychologist, therapist, or psychiatrist, i.e., someone with a professional qualification.

There is an ethical issue of competence. Only someone qualified to diagnose and treat a person can conduct a formal case study relating to atypical (i.e., abnormal) behavior or atypical development.

 Famous Case Studies

• Anna O – One of the most famous case studies, documenting psychoanalyst Josef Breuer’s treatment of “Anna O” (real name Bertha Pappenheim) for hysteria in the late 1800s using early psychoanalytic theory.
• Little Hans – A child psychoanalysis case study published by Sigmund Freud in 1909 analyzing his five-year-old patient Herbert Graf’s house phobia as related to the Oedipus complex.
• Bruce/Brenda – Gender identity case of the boy (Bruce) whose botched circumcision led psychologist John Money to advise gender reassignment and raise him as a girl (Brenda) in the 1960s.
• Genie Wiley – Linguistics/psychological development case of the victim of extreme isolation abuse who was studied in 1970s California for effects of early language deprivation on acquiring speech later in life.
• Phineas Gage – One of the most famous neuropsychology case studies analyzes personality changes in railroad worker Phineas Gage after an 1848 brain injury involving a tamping iron piercing his skull.

Clinical Case Studies

• Studying the effectiveness of psychotherapy approaches with an individual patient
• Assessing and treating mental illnesses like depression, anxiety disorders, PTSD
• Neuropsychological cases investigating brain injuries or disorders

Child Psychology Case Studies

• Studying psychological development from birth through adolescence
• Cases of learning disabilities, autism spectrum disorders, ADHD
• Effects of trauma, abuse, deprivation on development

Types of Case Studies

• Explanatory case studies : Used to explore causation in order to find underlying principles. Helpful for doing qualitative analysis to explain presumed causal links.
• Exploratory case studies : Used to explore situations where an intervention being evaluated has no clear set of outcomes. It helps define questions and hypotheses for future research.
• Descriptive case studies : Describe an intervention or phenomenon and the real-life context in which it occurred. It is helpful for illustrating certain topics within an evaluation.
• Multiple-case studies : Used to explore differences between cases and replicate findings across cases. Helpful for comparing and contrasting specific cases.
• Intrinsic : Used to gain a better understanding of a particular case. Helpful for capturing the complexity of a single case.
• Collective : Used to explore a general phenomenon using multiple case studies. Helpful for jointly studying a group of cases in order to inquire into the phenomenon.

Where Do You Find Data for a Case Study?

There are several places to find data for a case study. The key is to gather data from multiple sources to get a complete picture of the case and corroborate facts or findings through triangulation of evidence. Most of this information is likely qualitative (i.e., verbal description rather than measurement), but the psychologist might also collect numerical data.

1. Primary sources

• Interviews – Interviewing key people related to the case to get their perspectives and insights. The interview is an extremely effective procedure for obtaining information about an individual, and it may be used to collect comments from the person’s friends, parents, employer, workmates, and others who have a good knowledge of the person, as well as to obtain facts from the person him or herself.
• Observations – Observing behaviors, interactions, processes, etc., related to the case as they unfold in real-time.
• Documents & Records – Reviewing private documents, diaries, public records, correspondence, meeting minutes, etc., relevant to the case.

2. Secondary sources

• News/Media – News coverage of events related to the case study.
• Academic articles – Journal articles, dissertations etc. that discuss the case.
• Government reports – Official data and records related to the case context.
• Books/films – Books, documentaries or films discussing the case.

3. Archival records

Searching historical archives, museum collections and databases to find relevant documents, visual/audio records related to the case history and context.

Public archives like newspapers, organizational records, photographic collections could all include potentially relevant pieces of information to shed light on attitudes, cultural perspectives, common practices and historical contexts related to psychology.

4. Organizational records

Organizational records offer the advantage of often having large datasets collected over time that can reveal or confirm psychological insights.

Of course, privacy and ethical concerns regarding confidential data must be navigated carefully.

However, with proper protocols, organizational records can provide invaluable context and empirical depth to qualitative case studies exploring the intersection of psychology and organizations.

• Organizational/industrial psychology research : Organizational records like employee surveys, turnover/retention data, policies, incident reports etc. may provide insight into topics like job satisfaction, workplace culture and dynamics, leadership issues, employee behaviors etc.
• Clinical psychology : Therapists/hospitals may grant access to anonymized medical records to study aspects like assessments, diagnoses, treatment plans etc. This could shed light on clinical practices.
• School psychology : Studies could utilize anonymized student records like test scores, grades, disciplinary issues, and counseling referrals to study child development, learning barriers, effectiveness of support programs, and more.

How do I Write a Case Study in Psychology?

Follow specified case study guidelines provided by a journal or your psychology tutor. General components of clinical case studies include: background, symptoms, assessments, diagnosis, treatment, and outcomes. Interpreting the information means the researcher decides what to include or leave out. A good case study should always clarify which information is the factual description and which is an inference or the researcher’s opinion.

1. Introduction

• Provide background on the case context and why it is of interest, presenting background information like demographics, relevant history, and presenting problem.
• Compare briefly to similar published cases if applicable. Clearly state the focus/importance of the case.

2. Case Presentation

• Describe the presenting problem in detail, including symptoms, duration,and impact on daily life.
• Include client demographics like age and gender, information about social relationships, and mental health history.
• Describe all physical, emotional, and/or sensory symptoms reported by the client.
• Use patient quotes to describe the initial complaint verbatim. Follow with full-sentence summaries of relevant history details gathered, including key components that led to a working diagnosis.
• Summarize clinical exam results, namely orthopedic/neurological tests, imaging, lab tests, etc. Note actual results rather than subjective conclusions. Provide images if clearly reproducible/anonymized.
• Clearly state the working diagnosis or clinical impression before transitioning to management.

3. Management and Outcome

• Indicate the total duration of care and number of treatments given over what timeframe. Use specific names/descriptions for any therapies/interventions applied.
• Present the results of the intervention,including any quantitative or qualitative data collected.
• For outcomes, utilize visual analog scales for pain, medication usage logs, etc., if possible. Include patient self-reports of improvement/worsening of symptoms. Note the reason for discharge/end of care.

4. Discussion

• Analyze the case, exploring contributing factors, limitations of the study, and connections to existing research.
• Analyze the effectiveness of the intervention,considering factors like participant adherence, limitations of the study, and potential alternative explanations for the results.
• Identify any questions raised in the case analysis and relate insights to established theories and current research if applicable. Avoid definitive claims about physiological explanations.
• Offer clinical implications, and suggest future research directions.

5. Additional Items

• Thank specific assistants for writing support only. No patient acknowledgments.
• References should directly support any key claims or quotes included.
• Use tables/figures/images only if substantially informative. Include permissions and legends/explanatory notes.
• Provides detailed (rich qualitative) information.
• Provides insight for further research.
• Permitting investigation of otherwise impractical (or unethical) situations.

Case studies allow a researcher to investigate a topic in far more detail than might be possible if they were trying to deal with a large number of research participants (nomothetic approach) with the aim of ‘averaging’.

Because of their in-depth, multi-sided approach, case studies often shed light on aspects of human thinking and behavior that would be unethical or impractical to study in other ways.

Research that only looks into the measurable aspects of human behavior is not likely to give us insights into the subjective dimension of experience, which is important to psychoanalytic and humanistic psychologists.

Case studies are often used in exploratory research. They can help us generate new ideas (that might be tested by other methods). They are an important way of illustrating theories and can help show how different aspects of a person’s life are related to each other.

The method is, therefore, important for psychologists who adopt a holistic point of view (i.e., humanistic psychologists ).

Limitations

• Lacking scientific rigor and providing little basis for generalization of results to the wider population.
• Researchers’ own subjective feelings may influence the case study (researcher bias).
• Difficult to replicate.
• Time-consuming and expensive.
• The volume of data, together with the time restrictions in place, impacted the depth of analysis that was possible within the available resources.

Because a case study deals with only one person/event/group, we can never be sure if the case study investigated is representative of the wider body of “similar” instances. This means the conclusions drawn from a particular case may not be transferable to other settings.

Because case studies are based on the analysis of qualitative (i.e., descriptive) data , a lot depends on the psychologist’s interpretation of the information she has acquired.

This means that there is a lot of scope for Anna O , and it could be that the subjective opinions of the psychologist intrude in the assessment of what the data means.

For example, Freud has been criticized for producing case studies in which the information was sometimes distorted to fit particular behavioral theories (e.g., Little Hans ).

This is also true of Money’s interpretation of the Bruce/Brenda case study (Diamond, 1997) when he ignored evidence that went against his theory.

Breuer, J., & Freud, S. (1895).  Studies on hysteria . Standard Edition 2: London.

Curtiss, S. (1981). Genie: The case of a modern wild child .

Diamond, M., & Sigmundson, K. (1997). Sex Reassignment at Birth: Long-term Review and Clinical Implications. Archives of Pediatrics & Adolescent Medicine , 151(3), 298-304

Freud, S. (1909a). Analysis of a phobia of a five year old boy. In The Pelican Freud Library (1977), Vol 8, Case Histories 1, pages 169-306

Freud, S. (1909b). Bemerkungen über einen Fall von Zwangsneurose (Der “Rattenmann”). Jb. psychoanal. psychopathol. Forsch ., I, p. 357-421; GW, VII, p. 379-463; Notes upon a case of obsessional neurosis, SE , 10: 151-318.

Harlow J. M. (1848). Passage of an iron rod through the head.  Boston Medical and Surgical Journal, 39 , 389–393.

Harlow, J. M. (1868).  Recovery from the Passage of an Iron Bar through the Head .  Publications of the Massachusetts Medical Society. 2  (3), 327-347.

Money, J., & Ehrhardt, A. A. (1972).  Man & Woman, Boy & Girl : The Differentiation and Dimorphism of Gender Identity from Conception to Maturity. Baltimore, Maryland: Johns Hopkins University Press.

Money, J., & Tucker, P. (1975). Sexual signatures: On being a man or a woman.

Further Information

• Case Study Approach
• Case Study Method
• Enhancing the Quality of Case Studies in Health Services Research
• “We do things together” A case study of “couplehood” in dementia
• Using mixed methods for evaluating an integrative approach to cancer care: a case study

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Quality improvement into practice

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• Adam Backhouse , quality improvement programme lead 1 ,
• Fatai Ogunlayi , public health specialty registrar 2
• 1 North London Partners in Health and Care, Islington CCG, London N1 1TH, UK
• 2 Institute of Applied Health Research, Public Health, University of Birmingham, B15 2TT, UK
• Correspondence to: A Backhouse adam.backhouse{at}nhs.net

What you need to know

Thinking of quality improvement (QI) as a principle-based approach to change provides greater clarity about ( a ) the contribution QI offers to staff and patients, ( b ) how to differentiate it from other approaches, ( c ) the benefits of using QI together with other change approaches

QI is not a silver bullet for all changes required in healthcare: it has great potential to be used together with other change approaches, either concurrently (using audit to inform iterative tests of change) or consecutively (using QI to adapt published research to local context)

As QI becomes established, opportunities for these collaborations will grow, to the benefit of patients.

The benefits to front line clinicians of participating in quality improvement (QI) activity are promoted in many health systems. QI can represent a valuable opportunity for individuals to be involved in leading and delivering change, from improving individual patient care to transforming services across complex health and care systems. 1

However, it is not clear that this promotion of QI has created greater understanding of QI or widespread adoption. QI largely remains an activity undertaken by experts and early adopters, often in isolation from their peers. 2 There is a danger of a widening gap between this group and the majority of healthcare professionals.

This article will make it easier for those new to QI to understand what it is, where it fits with other approaches to improving care (such as audit or research), when best to use a QI approach, making it easier to understand the relevance and usefulness of QI in delivering better outcomes for patients.

How this article was made

AB and FO are both specialist quality improvement practitioners and have developed their expertise working in QI roles for a variety of UK healthcare organisations. The analysis presented here arose from AB and FO’s observations of the challenges faced when introducing QI, with healthcare providers often unable to distinguish between QI and other change approaches, making it difficult to understand what QI can do for them.

How is quality improvement defined?

There are many definitions of QI ( box 1 ). The BMJ ’s Quality Improvement series uses the Academy of Medical Royal Colleges definition. 6 Rather than viewing QI as a single method or set of tools, it can be more helpful to think of QI as based on a set of principles common to many of these definitions: a systematic continuous approach that aims to solve problems in healthcare, improve service provision, and ultimately provide better outcomes for patients.

Definitions of quality improvement

Improvement in patient outcomes, system performance, and professional development that results from a combined, multidisciplinary approach in how change is delivered. 3

The delivery of healthcare with improved outcomes and lower cost through continuous redesigning of work processes and systems. 4

Using a systematic change method and strategies to improve patient experience and outcome. 5

To make a difference to patients by improving safety, effectiveness, and experience of care by using understanding of our complex healthcare environment, applying a systematic approach, and designing, testing, and implementing changes using real time measurement for improvement. 6

In this article we discuss QI as an approach to improving healthcare that follows the principles outlined in box 2 ; this may be a useful reference to consider how particular methods or tools could be used as part of a QI approach.

Principles of QI

Primary intent— To bring about measurable improvement to a specific aspect of healthcare delivery, often with evidence or theory of what might work but requiring local iterative testing to find the best solution. 7

Employing an iterative process of testing change ideas— Adopting a theory of change which emphasises a continuous process of planning and testing changes, studying and learning from comparing the results to a predicted outcome, and adapting hypotheses in response to results of previous tests. 8 9

Consistent use of an agreed methodology— Many different QI methodologies are available; commonly cited methodologies include the Model for Improvement, Lean, Six Sigma, and Experience-based Co-design. 4 Systematic review shows that the choice of tools or methodologies has little impact on the success of QI provided that the chosen methodology is followed consistently. 10 Though there is no formal agreement on what constitutes a QI tool, it would include activities such as process mapping that can be used within a range of QI methodological approaches. NHS Scotland’s Quality Improvement Hub has a glossary of commonly used tools in QI. 11

Empowerment of front line staff and service users— QI work should engage staff and patients by providing them with the opportunity and skills to contribute to improvement work. Recognition of this need often manifests in drives from senior leadership or management to build QI capability in healthcare organisations, but it also requires that frontline staff and service users feel able to make use of these skills and take ownership of improvement work. 12

Using data to drive improvement— To drive decision making by measuring the impact of tests of change over time and understanding variation in processes and outcomes. Measurement for improvement typically prioritises this narrative approach over concerns around exactness and completeness of data. 13 14

Scale-up and spread, with adaptation to context— As interventions tested using a QI approach are scaled up and the degree of belief in their efficacy increases, it is desirable that they spread outward and be adopted by others. Key to successful diffusion of improvement is the adaption of interventions to new environments, patient and staff groups, available resources, and even personal preferences of healthcare providers in surrounding areas, again using an iterative testing approach. 15 16

What other approaches to improving healthcare are there?

Taking considered action to change healthcare for the better is not new, but QI as a distinct approach to improving healthcare is a relatively recent development. There are many well established approaches to evaluating and making changes to healthcare services in use, and QI will only be adopted more widely if it offers a new perspective or an advantage over other approaches in certain situations.

A non-systematic literature scan identified the following other approaches for making change in healthcare: research, clinical audit, service evaluation, and clinical transformation. We also identified innovation as an important catalyst for change, but we did not consider it an approach to evaluating and changing healthcare services so much as a catch-all term for describing the development and introduction of new ideas into the system. A summary of the different approaches and their definition is shown in box 3 . Many have elements in common with QI, but there are important difference in both intent and application. To be useful to clinicians and managers, QI must find a role within healthcare that complements research, audit, service evaluation, and clinical transformation while retaining the core principles that differentiate it from these approaches.

Alternatives to QI

Research— The attempt to derive generalisable new knowledge by addressing clearly defined questions with systematic and rigorous methods. 17

Clinical audit— A way to find out if healthcare is being provided in line with standards and to let care providers and patients know where their service is doing well, and where there could be improvements. 18

Service evaluation— A process of investigating the effectiveness or efficiency of a service with the purpose of generating information for local decision making about the service. 19

Clinical transformation— An umbrella term for more radical approaches to change; a deliberate, planned process to make dramatic and irreversible changes to how care is delivered. 20

Innovation— To develop and deliver new or improved health policies, systems, products and technologies, and services and delivery methods that improve people’s health. Health innovation responds to unmet needs by employing new ways of thinking and working. 21

Why do we need to make this distinction for QI to succeed?

Improvement in healthcare is 20% technical and 80% human. 22 Essential to that 80% is clear communication, clarity of approach, and a common language. Without this shared understanding of QI as a distinct approach to change, QI work risks straying from the core principles outlined above, making it less likely to succeed. If practitioners cannot communicate clearly with their colleagues about the key principles and differences of a QI approach, there will be mismatched expectations about what QI is and how it is used, lowering the chance that QI work will be effective in improving outcomes for patients. 23

There is also a risk that the language of QI is adopted to describe change efforts regardless of their fidelity to a QI approach, either due to a lack of understanding of QI or a lack of intention to carry it out consistently. 9 Poor fidelity to the core principles of QI reduces its effectiveness and makes its desired outcome less likely, leading to wasted effort by participants and decreasing its credibility. 2 8 24 This in turn further widens the gap between advocates of QI and those inclined to scepticism, and may lead to missed opportunities to use QI more widely, consequently leading to variation in the quality of patient care.

Without articulating the differences between QI and other approaches, there is a risk of not being able to identify where a QI approach can best add value. Conversely, we might be tempted to see QI as a “silver bullet” for every healthcare challenge when a different approach may be more effective. In reality it is not clear that QI will be fit for purpose in tackling all of the wicked problems of healthcare delivery and we must be able to identify the right tool for the job in each situation. 25 Finally, while different approaches will be better suited to different types of challenge, not having a clear understanding of how approaches differ and complement each other may mean missed opportunities for multi-pronged approaches to improving care.

What is the relationship between QI and other approaches such as audit?

Academic journals, healthcare providers, and “arms-length bodies” have made various attempts to distinguish between the different approaches to improving healthcare. 19 26 27 28 However, most comparisons do not include QI or compare QI to only one or two of the other approaches. 7 29 30 31 To make it easier for people to use QI approaches effectively and appropriately, we summarise the similarities, differences, and crossover between QI and other approaches to tackling healthcare challenges ( fig 1 ).

How quality improvement interacts with other approaches to improving healthcare

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QI and research

Research aims to generate new generalisable knowledge, while QI typically involves a combination of generating new knowledge or implementing existing knowledge within a specific setting. 32 Unlike research, including pragmatic research designed to test effectiveness of interventions in real life, QI does not aim to provide generalisable knowledge. In common with QI, research requires a consistent methodology. This method is typically used, however, to prove or disprove a fixed hypothesis rather than the adaptive hypotheses developed through the iterative testing of ideas typical of QI. Both research and QI are interested in the environment where work is conducted, though with different intentions: research aims to eliminate or at least reduce the impact of many variables to create generalisable knowledge, whereas QI seeks to understand what works best in a given context. The rigour of data collection and analysis required for research is much higher; in QI a criterion of “good enough” is often applied.

Relationship with QI

Though the goal of clinical research is to develop new knowledge that will lead to changes in practice, much has been written on the lag time between publication of research evidence and system-wide adoption, leading to delays in patients benefitting from new treatments or interventions. 33 QI offers a way to iteratively test the conditions required to adapt published research findings to the local context of individual healthcare providers, generating new knowledge in the process. Areas with little existing knowledge requiring further research may be identified during improvement activities, which in turn can form research questions for further study. QI and research also intersect in the field of improvement science, the academic study of QI methods which seeks to ensure QI is carried out as effectively as possible. 34

Scenario: QI for translational research

Newly published research shows that a particular physiotherapy intervention is more clinically effective when delivered in short, twice-daily bursts rather than longer, less frequent sessions. A team of hospital physiotherapists wish to implement the change but are unclear how they will manage the shift in workload and how they should introduce this potentially disruptive change to staff and to patients.

Before continuing reading think about your own practice— How would you approach this situation, and how would you use the QI principles described in this article?

Adopting a QI approach, the team realise that, although the change they want to make is already determined, the way in which it is introduced and adapted to their wards is for them to decide. They take time to explain the benefits of the change to colleagues and their current patients, and ask patients how they would best like to receive their extra physiotherapy sessions.

The change is planned and tested for two weeks with one physiotherapist working with a small number of patients. Data are collected each day, including reasons why sessions were missed or refused. The team review the data each day and make iterative changes to the physiotherapist’s schedule, and to the times of day the sessions are offered to patients. Once an improvement is seen, this new way of working is scaled up to all of the patients on the ward.

The findings of the work are fed into a service evaluation of physiotherapy provision across the hospital, which uses the findings of the QI work to make recommendations about how physiotherapy provision should be structured in the future. People feel more positive about the change because they know colleagues who have already made it work in practice.

QI and clinical audit

Clinical audit is closely related to QI: it is often used with the intention of iteratively improving the standard of healthcare, albeit in relation to a pre-determined standard of best practice. 35 When used iteratively, interspersed with improvement action, the clinical audit cycle adheres to many of the principles of QI. However, in practice clinical audit is often used by healthcare organisations as an assurance function, making it less likely to be carried out with a focus on empowering staff and service users to make changes to practice. 36 Furthermore, academic reviews of audit programmes have shown audit to be an ineffective approach to improving quality due to a focus on data collection and analysis without a well developed approach to the action section of the audit cycle. 37 Clinical audits, such as the National Clinical Audit Programme in the UK (NCAPOP), often focus on the management of specific clinical conditions. QI can focus on any part of service delivery and can take a more cross-cutting view which may identify issues and solutions that benefit multiple patient groups and pathways. 30

Audit is often the first step in a QI process and is used to identify improvement opportunities, particularly where compliance with known standards for high quality patient care needs to be improved. Audit can be used to establish a baseline and to analyse the impact of tests of change against the baseline. Also, once an improvement project is under way, audit may form part of rapid cycle evaluation, during the iterative testing phase, to understand the impact of the idea being tested. Regular clinical audit may be a useful assurance tool to help track whether improvements have been sustained over time.

Scenario: Audit and QI

A foundation year 2 (FY2) doctor is asked to complete an audit of a pre-surgical pathway by looking retrospectively through patient documentation. She concludes that adherence to best practice is mixed and recommends: “Remind the team of the importance of being thorough in this respect and re-audit in 6 months.” The results are presented at an audit meeting, but a re-audit a year later by a new FY2 doctor shows similar results.

Before continuing reading think about your own practice— How would you approach this situation, and how would you use the QI principles described in this paper?

Contrast the above with a team-led, rapid cycle audit in which everyone contributes to collecting and reviewing data from the previous week, discussed at a regular team meeting. Though surgical patients are often transient, their experience of care and ideas for improvement are captured during discharge conversations. The team identify and test several iterative changes to care processes. They document and test these changes between audits, leading to sustainable change. Some of the surgeons involved work across multiple hospitals, and spread some of the improvements, with the audit tool, as they go.

QI and service evaluation

In practice, service evaluation is not subject to the same rigorous definition or governance as research or clinical audit, meaning that there are inconsistencies in the methodology for carrying it out. While the primary intent for QI is to make change that will drive improvement, the primary intent for evaluation is to assess the performance of current patient care. 38 Service evaluation may be carried out proactively to assess a service against its stated aims or to review the quality of patient care, or may be commissioned in response to serious patient harm or red flags about service performance. The purpose of service evaluation is to help local decision makers determine whether a service is fit for purpose and, if necessary, identify areas for improvement.

Service evaluation may be used to initiate QI activity by identifying opportunities for change that would benefit from a QI approach. It may also evaluate the impact of changes made using QI, either during the work or after completion to assess sustainability of improvements made. Though likely planned as separate activities, service evaluation and QI may overlap and inform each other as they both develop. Service evaluation may also make a judgment about a service’s readiness for change and identify any barriers to, or prerequisites for, carrying out QI.

QI and clinical transformation

Clinical transformation involves radical, dramatic, and irreversible change—the sort of change that cannot be achieved through continuous improvement alone. As with service evaluation, there is no consensus on what clinical transformation entails, and it may be best thought of as an umbrella term for the large scale reform or redesign of clinical services and the non-clinical services that support them. 20 39 While it is possible to carry out transformation activity that uses elements of QI approach, such as effective engagement of the staff and patients involved, QI which rests on iterative test of change cannot have a transformational approach—that is, one-off, irreversible change.

There is opportunity to use QI to identify and test ideas before full scale clinical transformation is implemented. This has the benefit of engaging staff and patients in the clinical transformation process and increasing the degree of belief that clinical transformation will be effective or beneficial. Transformation activity, once completed, could be followed up with QI activity to drive continuous improvement of the new process or allow adaption of new ways of working. As interventions made using QI are scaled up and spread, the line between QI and transformation may seem to blur. The shift from QI to transformation occurs when the intention of the work shifts away from continuous testing and adaptation into the wholesale implementation of an agreed solution.

Scenario: QI and clinical transformation

An NHS trust’s human resources (HR) team is struggling to manage its junior doctor placements, rotas, and on-call duties, which is causing tension and has led to concern about medical cover and patient safety out of hours. A neighbouring trust has launched a smartphone app that supports clinicians and HR colleagues to manage these processes with the great success.

This problem feels ripe for a transformation approach—to launch the app across the trust, confident that it will solve the trust’s problems.

Before continuing reading think about your own organisation— What do you think will happen, and how would you use the QI principles described in this article for this situation?

Outcome without QI

Unfortunately, the HR team haven’t taken the time to understand the underlying problems with their current system, which revolve around poor communication and clarity from the HR team, based on not knowing who to contact and being unable to answer questions. HR assume that because the app has been a success elsewhere, it will work here as well.

People get excited about the new app and the benefits it will bring, but no consideration is given to the processes and relationships that need to be in place to make it work. The app is launched with a high profile campaign and adoption is high, but the same issues continue. The HR team are confused as to why things didn’t work.

Outcome with QI

Although the app has worked elsewhere, rolling it out without adapting it to local context is a risk – one which application of QI principles can mitigate.

HR pilot the app in a volunteer specialty after spending time speaking to clinicians to better understand their needs. They carry out several tests of change, ironing out issues with the process as they go, using issues logged and clinician feedback as a source of data. When they are confident the app works for them, they expand out to a directorate, a division, and finally the transformational step of an organisation-wide rollout can be taken.

Education into practice

Next time when faced with what looks like a quality improvement (QI) opportunity, consider asking:

How do you know that QI is the best approach to this situation? What else might be appropriate?

Have you considered how to ensure you implement QI according to the principles described above?

Is there opportunity to use other approaches in tandem with QI for a more effective result?

How patients were involved in the creation of this article

This article was conceived and developed in response to conversations with clinicians and patients working together on co-produced quality improvement and research projects in a large UK hospital. The first iteration of the article was reviewed by an expert patient, and, in response to their feedback, we have sought to make clearer the link between understanding the issues raised and better patient care.

Contributors: This work was initially conceived by AB. AB and FO were responsible for the research and drafting of the article. AB is the guarantor of the article.

Competing interests: We have read and understood BMJ policy on declaration of interests and have no relevant interests to declare.

Provenance and peer review: This article is part of a series commissioned by The BMJ based on ideas generated by a joint editorial group with members from the Health Foundation and The BMJ , including a patient/carer. The BMJ retained full editorial control over external peer review, editing, and publication. Open access fees and The BMJ ’s quality improvement editor post are funded by the Health Foundation.

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ .

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Total quality management: three case studies from around the world

With organisations to run and big orders to fill, it’s easy to see how some ceos inadvertently sacrifice quality for quantity. by integrating a system of total quality management it’s possible to have both.

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There are few boardrooms in the world whose inhabitants don’t salivate at the thought of engaging in a little aggressive expansion. After all, there’s little room in a contemporary, fast-paced business environment for any firm whose leaders don’t subscribe to ambitions of bigger factories, healthier accounts and stronger turnarounds. Yet too often such tales of excess go hand-in-hand with complaints of a severe drop in quality.

Food and entertainment markets are riddled with cautionary tales, but service sectors such as health and education aren’t immune to the disappointing by-products of unsustainable growth either. As always, the first steps in avoiding a catastrophic forsaking of quality begins with good management.

There are plenty of methods and models geared at managing the quality of a particular company’s goods or services. Yet very few of those models take into consideration the widely held belief that any company is only as strong as its weakest link. With that in mind, management consultant William Deming developed an entirely new set of methods with which to address quality.

Deming, whose managerial work revolutionised the titanic Japanese manufacturing industry, perceived quality management to be more of a philosophy than anything else. Top-to-bottom improvement, he reckoned, required uninterrupted participation of all key employees and stakeholders. Thus, the total quality management (TQM) approach was born.

All in Similar to the Six Sigma improvement process, TQM ensures long-term success by enforcing all-encompassing internal guidelines and process standards to reduce errors. By way of serious, in-depth auditing – as well as some well-orchestrated soul-searching – TQM ensures firms meet stakeholder needs and expectations efficiently and effectively, without forsaking ethical values.

By opting to reframe the way employees think about the company’s goals and processes, TQM allows CEOs to make sure certain things are done right from day one. According to Teresa Whitacre, of international consulting firm ASQ , proper quality management also boosts a company’s profitability.

“Total quality management allows the company to look at their management system as a whole entity — not just an output of the quality department,” she says. “Total quality means the organisation looks at all inputs, human resources, engineering, production, service, distribution, sales, finance, all functions, and their impact on the quality of all products or services of the organisation. TQM can improve a company’s processes and bottom line.”

Embracing the entire process sees companies strive to improve in several core areas, including: customer focus, total employee involvement, process-centred thinking, systematic approaches, good communication and leadership and integrated systems. Yet Whitacre is quick to point out that companies stand to gain very little from TQM unless they’re willing to go all-in.

“Companies need to consider the inputs of each department and determine which inputs relate to its governance system. Then, the company needs to look at the same inputs and determine if those inputs are yielding the desired results,” she says. “For example, ISO 9001 requires management reviews occur at least annually. Aside from minimum standard requirements, the company is free to review what they feel is best for them. While implementing TQM, they can add to their management review the most critical metrics for their business, such as customer complaints, returns, cost of products, and more.”

The customer knows best: AtlantiCare TQM isn’t an easy management strategy to introduce into a business; in fact, many attempts tend to fall flat. More often than not, it’s because firms maintain natural barriers to full involvement. Middle managers, for example, tend to complain their authority is being challenged when boots on the ground are encouraged to speak up in the early stages of TQM. Yet in a culture of constant quality enhancement, the views of any given workforce are invaluable.

AtlantiCare in numbers

5,000 Employees

$280m Profits before quality improvement strategy was implemented

$650m Profits after quality improvement strategy

One firm that’s proven the merit of TQM is New Jersey-based healthcare provider AtlantiCare . Managing 5,000 employees at 25 locations, AtlantiCare is a serious business that’s boasted a respectable turnaround for nearly two decades. Yet in order to increase that margin further still, managers wanted to implement improvements across the board. Because patient satisfaction is the single-most important aspect of the healthcare industry, engaging in a renewed campaign of TQM proved a natural fit. The firm chose to adopt a ‘plan-do-check-act’ cycle, revealing gaps in staff communication – which subsequently meant longer patient waiting times and more complaints. To tackle this, managers explored a sideways method of internal communications. Instead of information trickling down from top-to-bottom, all of the company’s employees were given freedom to provide vital feedback at each and every level.

AtlantiCare decided to ensure all new employees understood this quality culture from the onset. At orientation, staff now receive a crash course in the company’s performance excellence framework – a management system that organises the firm’s processes into five key areas: quality, customer service, people and workplace, growth and financial performance. As employees rise through the ranks, this emphasis on improvement follows, so managers can operate within the company’s tight-loose-tight process management style.

After creating benchmark goals for employees to achieve at all levels – including better engagement at the point of delivery, increasing clinical communication and identifying and prioritising service opportunities – AtlantiCare was able to thrive. The number of repeat customers at the firm tripled, and its market share hit a six-year high. Profits unsurprisingly followed. The firm’s revenues shot up from $280m to $650m after implementing the quality improvement strategies, and the number of patients being serviced dwarfed state numbers.

Hitting the right notes: Santa Cruz Guitar Co For companies further removed from the long-term satisfaction of customers, it’s easier to let quality control slide. Yet there are plenty of ways in which growing manufacturers can pursue both quality and sales volumes simultaneously. Artisan instrument makers the Santa Cruz Guitar Co (SCGC) prove a salient example. Although the California-based company is still a small-scale manufacturing operation, SCGC has grown in recent years from a basement operation to a serious business.

SCGC in numbers

14 Craftsmen employed by SCGC

800 Custom guitars produced each year

Owner Dan Roberts now employs 14 expert craftsmen, who create over 800 custom guitars each year. In order to ensure the continued quality of his instruments, Roberts has created an environment that improves with each sale. To keep things efficient (as TQM must), the shop floor is divided into six workstations in which guitars are partially assembled and then moved to the next station. Each bench is manned by a senior craftsman, and no guitar leaves that builder’s station until he is 100 percent happy with its quality. This product quality is akin to a traditional assembly line; however, unlike a traditional, top-to-bottom factory, Roberts is intimately involved in all phases of instrument construction.

Utilising this doting method of quality management, it’s difficult to see how customers wouldn’t be satisfied with the artists’ work. Yet even if there were issues, Roberts and other senior management also spend much of their days personally answering web queries about the instruments. According to the managers, customers tend to be pleasantly surprised to find the company’s senior leaders are the ones answering their technical questions and concerns. While Roberts has no intentions of taking his manufacturing company to industrial heights, the quality of his instruments and high levels of customer satisfaction speak for themselves; the company currently boasts one lengthy backlog of orders.

A quality education: Ramaiah Institute of Management Studies Although it may appear easier to find success with TQM at a boutique-sized endeavour, the philosophy’s principles hold true in virtually every sector. Educational institutions, for example, have utilised quality management in much the same way – albeit to tackle decidedly different problems.

The global financial crisis hit higher education harder than many might have expected, and nowhere have the odds stacked higher than in India. The nation plays home to one of the world’s fastest-growing markets for business education. Yet over recent years, the relevance of business education in India has come into question. A report by one recruiter recently asserted just one in four Indian MBAs were adequately prepared for the business world.

RIMS in numbers

9% Increase in test scores post total quality management strategy

22% Increase in number of recruiters hiring from the school

20,000 Increase in the salary offered to graduates

50,000 Rise in placement revenue

At the Ramaiah Institute of Management Studies (RIMS) in Bangalore, recruiters and accreditation bodies specifically called into question the quality of students’ educations. Although the relatively small school has always struggled to compete with India’s renowned Xavier Labour Research Institute, the faculty finally began to notice clear hindrances in the success of graduates. The RIMS board decided it was time for a serious reassessment of quality management.

The school nominated Chief Academic Advisor Dr Krishnamurthy to head a volunteer team that would audit, analyse and implement process changes that would improve quality throughout (all in a particularly academic fashion). The team was tasked with looking at three key dimensions: assurance of learning, research and productivity, and quality of placements. Each member underwent extensive training to learn about action plans, quality auditing skills and continuous improvement tools – such as the ‘plan-do-study-act’ cycle.

Once faculty members were trained, the team’s first task was to identify the school’s key stakeholders, processes and their importance at the institute. Unsurprisingly, the most vital processes were identified as student intake, research, knowledge dissemination, outcomes evaluation and recruiter acceptance. From there, Krishnamurthy’s team used a fishbone diagram to help identify potential root causes of the issues plaguing these vital processes. To illustrate just how bad things were at the school, the team selected control groups and administered domain-based knowledge tests.

The deficits were disappointing. A RIMS students’ knowledge base was rated at just 36 percent, while students at Harvard rated 95 percent. Likewise, students’ critical thinking abilities rated nine percent, versus 93 percent at MIT. Worse yet, the mean salaries of graduating students averaged $36,000, versus $150,000 for students from Kellogg. Krishnamurthy’s team had their work cut out.

To tackle these issues, Krishnamurthy created an employability team, developed strategic architecture and designed pilot studies to improve the school’s curriculum and make it more competitive. In order to do so, he needed absolutely every employee and student on board – and there was some resistance at the onset. Yet the educator asserted it didn’t actually take long to convince the school’s stakeholders the changes were extremely beneficial.

“Once students started seeing the results, buy-in became complete and unconditional,” he says. Acceptance was also achieved by maintaining clearer levels of communication with stakeholders. The school actually started to provide shareholders with detailed plans and projections. Then, it proceeded with a variety of new methods, such as incorporating case studies into the curriculum, which increased general test scores by almost 10 percent. Administrators also introduced a mandate saying students must be certified in English by the British Council – increasing scores from 42 percent to 51 percent.

By improving those test scores, the perceived quality of RIMS skyrocketed. The number of top 100 businesses recruiting from the school shot up by 22 percent, while the average salary offers graduates were receiving increased by $20,000. Placement revenue rose by an impressive $50,000, and RIMS has since skyrocketed up domestic and international education tables.

No matter the business, total quality management can and will work. Yet this philosophical take on quality control will only impact firms that are in it for the long haul. Every employee must be in tune with the company’s ideologies and desires to improve, and customer satisfaction must reign supreme.

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Quality Improvement Case Study Repository

The ACS Quality Improvement Case Study Repository is a collection of QI projects from hospitals participating in ACS Quality Programs.

The ACS Quality Improvement Case Study Repository is a centralized platform of quality improvement projects implemented by participants of the ACS Quality Programs.  Each of the curated projects in the repository has been formatted to follow the new ACS Quality Framework , allowing readers to easily understand the details of each project from planning through execution, data analysis, and lessons learned.

All projects were developed by surgical clinical reviewers, cancer registrars, surgeon champions, program directors, or other quality improvement professionals. They focus on a local problem, utilize local data, and were implemented within their own facilities. They describe the team’s experience, explain project challenges, and how these challenges were addressed. 

The ACS is providing these case studies to educate and inspire surgical teams, their hospitals, and other healthcare entities to engage in quality improvement activities. Quality improvement is not an exact science, and it is important that your quality improvement project is based on a local problem at your institution.

The case studies offered represent the experiences of the authors and may not be generalizable to other institutions. These examples may serve as a starting point to assist you in developing your own quality improvement initiative. Adapting projects outlined as example here does not guarantee compliance with an ACS accreditation or verification standard.

If you have a quality improvement project you would like to add to the case study repository or would like to provide feedback on this new resource, contact us at [email protected] .

Implementation of Total Quality Management (TQM): Toyota Case Study

Introduction, implementation of tqm in toyota, tqm practices in toyota, benefits of tqm in toyota, examples of tqm in toyota, toyota quality management, toyota tqm implementation challenges.

The Toyota Corporation case study report is based on the implementation of total quality management (TQM) meant to improve the overall performance and operations of this automobile company. TQM involves the application of quality management standards to all elements of the business.

It requires that quality management standards be applied in all branches and at all levels of the organization. The characteristic of Toyota Corporation going through the total quality process is unambiguous and clear.

Toyota has limited interdepartmental barriers, excellent customer and supplier relations, spares time to be spent on training, and the recognition that quality is realized through offering excellent products as well as the quality of the entire firm, including personnel, finance, sales, and other functions.

The top management at Toyota Corporation has the responsibility for quality rather than the employees, and it is their role to provide commitment, support, and leadership to the human and technical processes (Kanji & Asher, 1996).

Whereas the TQM initiative is to succeed, the management has to foster the participation of Toyota Corporation workers in quality improvement and create a quality culture by altering attitudes and perceptions towards quality.

This research report assesses the implementation of TQM and how Toyota manages quality in all organization management systems while focusing on manufacturing quality. The report evaluates the organization management elements required when implementing TQM, identifies, and investigates the challenges facing Quality Managers or Executives in implementing Quality Management Systems.

In order to implement TQM, Toyota corporations focused on the following phases:

• The company extended the management responsibility past the instantaneous services and products
• Toyota examined how consumers applied the products generated, and this enabled the company to develop and improve its commodities
• Toyota focused on the insubstantial impacts on the procedures as well as how such effects could be minimized through optimization
• Toyota focused on the kaizen (incessant process development) in order to ensure that all procedures are measurable, repeatable, and visible.

The commitment from business executives is one of the key TQM implementation principles that make an organization successful. In fact, the organizational commitment present in the senior organizational staff ranges from top to lower administration. These occur through self-driven motives, motivation, and employee empowerment. Total Quality Management becomes achievable at Toyota by setting up the mission and vision statements, objectives, and organizational goals.

In addition, the TQM is achievable via the course of active participation in organizational follow-up actions. These actions denote the entire activities needed and involved during the implementation of the set-out ideologies of the organization. From Toyota Corporation’s report, TQM has been successful through the commitment of executive management and the organizational workforce (Toyota Motor Corporation, 2012).

Through inventory and half the bottlenecks at half cost and time, the adopters of TMS (Toyota Management System) are authorized to manufacture twice above the normal production. To manage the quality in all organizational management systems, the Toyota Production System incorporates different modernisms like strategy or Hoshin Kanri use, overall value supervision, and just-in-time assembly.

The amalgamation of these innovations enables Toyota to have a strong competitive advantage despite the fact that Toyota never originated from all of them. The 1914 Henry Ford invention relied on the just-in-time production model. The Ford system of production, from a grand perspective, warrants massive production, thus quality (Toyota Motor Corporation, 2012).

Kanji and Asher (1996) claim that to manage the minute set of production necessitated by the splintered and small post-war marketplaces, the JIT system focuses on the motion and elimination of waste materials. This reduces crave for work-in-process inventory by wrapping up the long production lines. Toyota Corp wraps the production lines into slashed change-over times, a multi-trained workforce that runs manifold machines, and new-fangled cells into a U shape.

When supplementing the just-in-cells, the system of kanban is employed by the Toyota Corporation to connect the cells that are unable to integrate physically. Equally, the system helps Toyota integrate with other external companies, consumers, and suppliers.

The TQM and the creativity of Toyota proprietors both support the quality at the source. The rectification and discovery of the production problems require the executives to be committed. At the forefront of Toyota operations, the managers integrate a number of forms of operational quality checks to ensure quality management at all levels.

The uninterrupted tests help the Toyota workforce engaging in the assembly course to scrutinize the value of apparatus, implements, and resources utilized in fabrication. The checks help in the scrutiny of the previously performed tasks by other workers. However, the corporation’s own test enables the workers to revise their personal advances in the assembly course.

The Toyota process owners set up the mistake-proofing (Poka-yoke) procedures and devices to capture the awareness of management and involuntarily correct and surface the augmenting problems. This is essential for the critical production circumstances and steps that prove impractical and tricky for Toyota employees to inspect.

Nevertheless, the policy deployment system decentralizes the process of decision-making at Toyota. This context of implementing Total Quality Management originates from Hoshin Kanri’s management by objective (MBO).

This aspect becomes more advantageous to Toyota when dealing with quality management. The system initially puts into practice the coordinated approach and provides a clear structure for the suppliers, producers, and consumers through inter-organizational cost administration. Moreover, Toyota executives can solve the concurrent delivery, cost, and quality bottlenecks, thus replacing and increasing the relatively slow accounting management mechanisms.

Customer focus that leads to the desired customer satisfaction at Toyota Company is one of the major success factors in TQM implementation. For every business to grow, it should have understanding, reliable, and trustworthy customers. The principle of customer satisfaction and focus has been the most presently well-thought-out aspect of Toyota’s manufacturing quality.

The TQM may characteristically involve total business focus towards meeting and exceeding customers’ expectations and requirements by considering their personal interests. The mission of improving and achieving customer satisfaction ought to stream from customer focus.

Thus, when focusing on manufacturing quality, this aspect enhances TQM implementation. The first priorities at Toyota are community satisfaction, employees, owners, consumers, and mission. The diverse consumer-related features from liberty. The concern to care is eminent in Toyota Corporation during manufacturing.

Toyota has three basic perspectives of TQM that are customer-oriented. These are based on its manufacturing process traced back to the 1950s. The strategies towards achieving quality manufacturing, planning, and having a culture towards quality accomplishment are paramount for TQM implementation to remain successful. To enhance and maintain quality through strategic planning schemes, all managers and employers must remain effectively driven.

This involves training workers on principles concerning quality culture and achievement. Scheduling and planning are analytical applications at Toyota Company that purposes in assessing customer demand, material availability, and plant capacity during manufacturing.

The Toyota Corporation has considerable approaches that rank it among the successful and renowned implementers of TQM. From the inherent and designed structure of Toyota, it becomes feasible to comprehend why quality manufacturing is gradually becoming effective. The inspection department is responsible for taking corrective measures, salvaging, and sorting the desired manufactured product or service quality.

The Toyota Corporation also has a quality control system that is involved in determining quality policies, reviewing statistics, and establishing quality manuals or presentation data. Furthermore, quality assurance is one of the integral principles in quality implementation that is practically present at Toyota. The quality assurance and quality inspectors throughout the Toyota Company structure also manage research and development concerning the quality of manufactured products and services.

The Toyota production and operations management system is similarly dubbed as the managerial system. In fact, in this corporation, operational management is also referred to as the production process, production management, or operations (Chary, 2009). These simply incorporate the actual production and delivery of products.

The managerial system involves product design and the associated product process, planning and implementing production, as well as acquiring and organizing resources. With this broad scope, the production and operation managers have a fundamental role to play in the company’s ability to reach the TQM implementation goals and objectives.

The Toyota Corporation operations managers are required to be conversant and familiar with the TQM implementation concepts and issues that surround this functional area. Toyota’s operation management system is focused on fulfilling the requirements of the customers.

The corporation realizes this by offering loyal and express commodities at logical fees and assisting dealers in progressing commodities proffered. As Slack et al. (2009) observed, the basic performance objectives, which pertain to all the Toyota’s operations, include quality, speed, flexibility, dependability, and cost. Toyota Company has been successful in meeting these objectives through its production and operation functions.

Over several decades, Toyota’s operational processes and management systems were streamlined, resulting in the popularly known Toyota Production System. Although the system had been extensively researched, many companies, such as Nissan, experienced difficulties in replicating TPS.

The TPS was conceived when the company realized that producing massive quantities from limited product lines and ensuring large components to achieve maximum economies of scale led to flaws. Its major objectives were to reduce cost, eliminate waste, and respond to the changing needs of the customers. The initial feature of this system was set-up time reduction, and this forms the basis of TQM implementation.

At Toyota Corporation, quality is considered as acting responsibly through the provision of blunder-gratis products that please the target clientele. Toyota vehicles are among the leading brands in customer satisfaction. Due to good quality, its success has kept growing, and in 2012, the company was the best worldwide. Moreover, Toyota has been keen on producing quality vehicles via the utilization of various technologies that improve the performance of the vehicles.

While implementing TQM, Toyota perceives speed as a key element. In this case, speed objective means doing things fast in order to reduce the time spent between ordering and availing the product to the customer.

The TPS method during processing concentrates on reducing intricacy via the use of minute and uncomplicated machinery that is elastic and full-bodied. The company’s human resources and managers are fond of reorganizing streams and designs to promote minimalism. This enhances the speed of production.

Another objective during TQM implementation is dependability. This means timely working to ensure that customers get their products within the promised time. Toyota has included a just-in-time production system comprised of multi-skilled employees who work in teams. The kanban control allows the workers to deliver goods and services as promised. Advancing value and effectiveness appears to be the distress for administrators, mechanical specialists, and other Toyota human resources.

During TQM implementation, Toyota responds to the demands by changing its products and the way of doing business. Chary (2009) argues that while implementing TQM, organizations must learn to like change and develop responsive and flexible organizations to deal with the changing business environment.

Within Toyota plants, this incorporates the ability to adopt the manufacturing resources to develop new models. The company is able to attain an elevated degree of suppleness, manufacturing fairly tiny bunches of products devoid of losses in excellence or output.

The organizational hierarchy and job descriptions also determine the successful implementation of the TQM. Toyota is amongst the few companies whose organizational structure and task allocation have proved viable in TQM implementation. The company has three levels of management. See the diagram below.

Management hierarchy

Despite the hierarchy and task specification, employees are able to make independent decisions and take corrective measures when necessary to ensure quality during production. Team working is highly encouraged at Toyota Corporation, and this plays a significant role during TQM implementation. All stakeholders are incorporated in quality control initiatives to ensure client demands are satisfied.

However, all employees are required to carry out their assigned tasks, and the management closely supervises the ways of interactions between workers. The management ensures that the manufacturing lines are well-built and all employees are motivated to learn how to improve the production processes.

Toyota is among the few manufacturers in the complete automobile industry that consistently profited during the oil crisis in 1974. The discovery was the unique team working of the Japanese that utilized scientific management rules (Huczynski & Buchanan, 2007).

The joint effort in Japan, usually dubbed Toyotaism, is a kind of job association emphasizing ‘lean-assembly.’ The technique merges just-in-time production, dilemma-answering groups, job equivalence, authoritative foremost-streak administration, and continued procedure perfection.

Just-in-time (JIT) assembly scheme attempts to accomplish all clients’ needs instantly, devoid of misuse but with ideal excellence. JIT appears to be dissimilar from the conventional functional performances in that it emphasizes speedy production and ravage purging that adds to stumpy supply.

Control and planning of many JIT approaches are concerned directly with pull scheduling, leveled scheduling, kanban control, synchronization of flow, and mixed-model scheduling (Slack et al., 2009).

Toyota appears to be amongst the principal participants in changing Japan to a kingpin in car production. Companies, which have adopted the company’s production system, have increased efficiency and productivity. The 2009 industrial survey of manufacturers indicates that many world-class firms have adopted continuous-flow or just-in-time production and many techniques Toyota has been developing many years ago.

In addition, the manufacturing examination of top plant victors illustrates that the mainstream them utilize lean production techniques widely. Thus, team-working TPS assists Toyota Corporation in the implementation of TQM.

Executives and Quality Managers face some challenges while implementing Quality Management Systems in organizations. In fact, with a lack of the implementation resources such as monetary and human resources in any organization, the implementation of TQM cannot be successful. Towards the implementation of programs and projects in organizations, financial and human resources have become the pillar stones.

The approach of TQM impels marketplace competence from all kinds of organizational proceeds to ensure profitability and productivity. To meet the desired results in TQM implementation, an organization ought to consider the availability of human and financial resources that are very important for the provision of an appropriate milieu for accomplishing organizational objectives.

In the case of Toyota, which originated and perfected the philosophy of TQM, the Executives, and Quality Managers met some intertwined problems during TQM implementation. The flaw in the new product development is increasingly becoming complicated for the managers to break and accelerate, thus creating reliability problems. Besides, secretive culture and dysfunctional organizational structure cause barriers in communication between the top management, thus, in turn, augmenting public outrage.

The top executives may fail to provide and scale up adequate training to the suppliers and new workforces. As a result, cracks are created in the rigorous TPS system. In addition, a lack of leadership at the top management might cause challenges in the implementation of TQM. Therefore, in designing the organizational structures and systems that impact quality, the senior executives and managers must be responsible, as elaborated in Figure 2 below.

Total Quality Management is a concept applied in the automobile industry, including the Toyota Corporation. It focuses on continuous improvement across all branches and levels of an organization. Being part of Toyota, the concept defines the way in which the organization can create value for its customers and other stakeholders. Through TQM, Toyota Corporation has been able to create value, which eventually leads to operation efficiencies.

These efficiencies have particularly been achieved by continuous correction of deficiencies identified in the process. A particular interest is the central role that information flow and management have played in enabling TQM initiatives to be implemented, especially through continuous learning and team working culture.

The Toyota way (kaizen), which aims at integrating the workforce suggestions while eliminating overproduction and manufacturing wastes, helps the company to respect all the stakeholders and give clients first priority. The objectives are realized through TPS.

Chary, D. 2009, Production and operations management , Tata McGraw-Hill Education Press, Mumbai.

Huczynski, A. & Buchanan, D. 2007, Organizational behavior; an introductory text, Prentice Hall, New York, NY.

Kanji, G. K. & Asher, M. 1996, 100 methods for total quality management , SAGE Thousands Oak, CA.

Slack, N. et al. 2009, Operations and process management: principles and practice for strategic management, Prentice Hall, New York, NY.

Toyota Motor Corporation 2012, Annual report 2012. Web.

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• Managerial and Professional Development: Deloitte & Touché Company
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IvyPanda. (2019, June 12). Implementation of Total Quality Management (TQM): Toyota Case Study. https://ivypanda.com/essays/total-quality-management-tqm-implementation-toyota/

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Case study: The Professional Kitchen by Henrybuilt

From its roasted walnut timbers and stone backsplashes to its human-centered functionality, the experiential Professional Kitchen space prioritizes practical sophistication, design refinement, and craft quality. AIA partner Fisher & Paykel tours the space.

When tasked with designing a new, experiential space for Fisher & Paykel’s Global Experience Center in Aotearoa, New Zealand, Seattle-based Henrybuilt opted for an approach that prioritized functional sophistication, design refinement, and craft quality, creating the perfect space to showcase the heritage manufacturer’s professional-style appliances. The end result: A kitchen that exemplifies how exceptional appliances can—and should—seamlessly fold into a meticulously designed domestic environment.

For more than 70 years, Henrybuilt has been synonymous with luxury kitchen design. Grounded in their philosophy to seamlessly blend the rigor of hand-made carpentry with the precision of modern technology is an approach that sees kitchens as not just functional, but enduring works of art.

The Professional Kitchen exemplifies this dedication. Solid timber and stone construction form the heart of the design, radiating a timeless elegance that complements any culinary passion. This commitment to natural materials extends to the countertops and backsplashes, featuring stunning Montpellier-style stone that was sourced directly from Henrybuilt's Northwestern home and designed and fabricated in the USA, before finding its home to rest in Aotearoa.

A symphony of texture and sustainability

Sustainability is a core tenet of Henrybuilt's design philosophy, with quality materials forming the cornerstone of their practice. The Professional Kitchen embraces this principle with the incorporation of Onyx PaperStone for the cabinetry. This beautiful and durable composite material not only boasts exceptional performance but also contributes to a lighter environmental footprint. This deeper meaning enhances the enduring kitchen design, which is supported by a warranty for life.

Timber takes center stage throughout the space, with roasted walnut offering a warm and inviting base. Accents of natural walnut on the built-in table and benches add depth and character, while hints of black walnut introduce a touch of intrigue. The drawer pulls, crafted from recycled leather and darkened bronze, showcase Henrybuilt's dedication to sustainable materials while simultaneously introducing a timeless elegance with a hint of aged patina.

Beyond aesthetics: functionality redefined

While aesthetics are paramount, there is functionality in every design. The expansive island and built-in table stretch nearly 9 meters, creating a generous workspace that caters to even the most ambitious culinary projects. The layout prioritizes efficiency, ensuring a smooth flow between cooking and cleaning zones—core aspects of Fisher & Paykel’s design philosophy.

Coming from a human-centered background, Henrybuilt’s first consideration is functionality. Usage of the space informs the design; it is a kitchen intended to withstand heavy usage and negate fleeting trends. Here, storage solutions are as beautiful as they are practical. The wet bar cabinetry, featuring twin CoolDrawers, is cleverly wall-mounted for a furniture-like feel, offering a designated space for beverages and entertaining. Pocket doors discreetly conceal the appliance garage, keeping small appliances out of sight when not in use. And meticulous attention to detail is evident throughout, with consistent 0.1-inch gaps maintaining a clean and visually balanced aesthetic between cabinetry and any potential appliance additions.

A space designed for serious cooks

Fisher & Paykel’s freestanding ranges at the far end of the kitchen serve as a powerful statement, a testament to the space's dedication to serious cooking. They stand aligned with the adjacent wall unit benchtops, diligently crafted by Henrybuilt to match the precise heights of the countertop and cabinetry. Ventilation seamlessly integrates through flues incorporated into the design, while exposed stainless steel canopies add a nod to industrial chic, softening the overall visual impact.

Professional-style appliances

Fisher & Paykel complements Henrybuilt's artistry with its human-centered approach to kitchen design. The brand’s Professional Style appliances, known for restaurant character, refined power, and robust materiality, echo Henrybuilt's focus on functionality. Fisher & Paykel understands the kitchen's role as both a workspace and a personal statement, where design freedom considers the ability to distribute and integrate appliances into work zones that enhance the way you live.

Elsewhere, beauty of choice allows for appliance selections that work within Henrybuilt's design, ensuring both performance and aesthetics remain uncompromised. This collaborative spirit elevates The Professional Kitchen, creating a space where function and beauty inspire culinary exploration.

The Professional Kitchen: A masterpiece by Henrybuilt

The Professional Kitchen is a master class in design and craftsmanship, a space where culinary dreams come to life. It is a testament to Henrybuilt and Fisher & Paykel’s shared dedication to pushing the boundaries of design innovation and creating exceptional kitchens that empower their inhabitants to express their culinary passions. This is not just a kitchen; it is a canvas for creation, a space where artistry and functionality collide to elevate the everyday act of cooking into an extraordinary experience.

To learn more about Fisher & Paykel, visit www.fisherpaykel.com . We also welcome you to our Experience Centers to see our premium appliance collection in person.  New York City: Architects & Designers Building 150 East 58th Street, 3rd Floor New York, NY 10155 888.979.4535

California: 695 Town Center Drive, Suite 180 Costa Mesa, CA 92626 855.372.1934

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New Homes Quality Board (NHQB): key case study takeaways for developers

Insight shared by:.

Gateley Legal

Since July 2023, the New Homes Quality Board (NHQB) has published 15 case studies which provide useful insights into the types of complaints being made against developers by new home buyers and the Ombudsman’s decision making. The case studies are intended to help developers improve their quality and customer service standards.

What have we learnt so far?

Out of the 15 case studies published by the New Homes Quality Code (NHQC) (relating to 18 individual cases), nine complaints were upheld in part, two complaints were fully upheld, and four complaints were not upheld.

Some of the key learnings and take away points for developers from the NHQB’s case studies are as follows:

• Acknowledge all issues raised by the customer when a complaint is received.
• Use a process that regularly updates customers on build timelines.
• Any price changes on the development should be published as quickly as possible.
• Ensure financial incentives are presented clearly in marketing materials.
• Disclose all relevant information at reservation and encourage buyers to read everything provided to them.
• Keep promises when offering to help customers.
• Make customers aware of property restrictions and covenants and when it is their responsibility to take action.
• Document all information verbally discussed and ensure it is identical to the information provided to your conveyancer.
• Temporary accommodation should be clean and take into account the specific circumstances of customers.
• Developers should consider adding an annotation to site plans to say that the location of affordable housing is indicative and may change.
• Clear information should be provided within reservation agreements to help customers understand that the tenure mix on the development is always subject to change.

What should developers do?

To ensure that best practices are being adopted and to mitigate the risk of being in breach of the NHQC, developers should ensure that they:

• keep up-to-date with the NHQB case studies, guidance published by the NHQC and any new versions of the NHQC that may be published in the future; and
• regularly review their documents and procedures in line with the NHQB’s recommendations.

For expert advice

Reach out to an expert listed below for advice on the New Homes Quality Code and/ or policies and procedures or see the wider team here.

Meet our experts

Emma Styles

Senior associate.

Location: Birmingham

0121 234 0186

View full profile

Anna Fort-Winn

Location: Leeds

0113 261 6621

Rebecca Dilks

0113 204 1182

Nicholas Attwooll

0113 204 1181

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Stress and Health

Stress is a common problem in most societies. There are three main types of stress that may occur in our everyday lives: acute (a brief event such as a heated argument or getting stuck in a traffic jam), acute episodic (frequent acute events such as work deadlines), and chronic stress (persistent events like unemployment from a job loss, physical or mental abuse, substance abuse, or family conflict). Many of us may experience a combination of these three types.

Our bodies react to all types of stress via the same mechanism, which occurs regardless if the stress arises from a real or perceived event. Both acute and chronic stressors cause the “fight-or-flight” response. Hormones are released that instigate several actions within seconds: pumping blood and oxygen quickly to our cells, quickening the heart rate, and increasing mental alertness. In prehistoric times, this rapid response was needed to quickly escape a dangerous situation or fight off a predator. However all types of stress can trigger this response, as described in more detail below:

• A very small region at the base of the brain, called the hypothalamus, sets off the reaction and communicates with the body through the autonomic nervous system (ANS). This system regulates involuntary responses like blood pressure, heart rate, breathing, and digestion. The ANS signals nerves and the hormone corticotropin to alert the adrenal glands, located on the top of each kidney, to release a hormone called adrenaline into the blood. [1]
• Adrenaline (also known as epinephrine) quickens the heart rate and increases blood pressure so more blood circulates to the muscles and heart to support a boost of energy. More oxygen in the blood is available to the heart, lungs, and brain to accommodate faster breathing and heightened alertness. Even one’s vision and hearing may become sharpened.
• If stress continues, the adrenal glands release another hormone called cortisol, which stimulates the release of glucose into the blood and increases the brain’s use of glucose for energy. It also turns off certain systems in the body to allow the body to focus on the stress response. These systems include digestion, reproduction, and growth.
• These hormones do not return to normal levels until the stress passes. If the stress does not pass, the nervous system continues to trigger physical reactions that can eventually lead to inflammation and damage to cells.

With acute stress, the event is brief and hormone levels will gradually return to normal. Acute episodic and chronic stress repeatedly trigger the fight-or-flight response causing a persistent elevation of hormones, leading to a risk of health problems: [2]

• Digestive issues (heartburn, flatulence, diarrhea, constipation)
• Weight gain
• Elevated blood pressure
• Chest pain, heart disease
• Immune system problems
• Skin conditions
• Muscular pain (headaches, back pain, neck pain)
• Sleep disruption, insomnia
• Infertility
• Anxiety, depression

How Chronic Stress Affects Eating Patterns

Chronic stress can affect the body’s use of calories and nutrients in various ways. It raises the body’s metabolic needs and increases the use and excretion of many nutrients. If one does not eat a nutritious diet, a deficiency may occur. [2] Stress also creates a chain reaction of behaviors that can negatively affect eating habits, leading to other health problems down the road.

• People feeling stress may lack the time or motivation to prepare nutritious, balanced meals, or may skip or forget to eat meals.
• Stress can disrupt sleep by causing lighter sleep or more frequent awakenings, which leads to fatigue during the day. [4] In order to cope with daytime fatigue, people may use stimulants to increase energy such as with caffeine or high-calorie snack foods. The reverse may also be true that poor-quality sleep is itself a stressor. Studies have found that sleep restriction causes a significant increase in cortisol levels. [4]
• During acute stress, the hormone adrenaline suppresses the appetite. [5] But with chronic stress, elevated levels of cortisol may cause cravings, particularly for foods high in sugar, fat, and calories, which may then lead to weight gain. [5,6]
• Cortisol favors the accumulation of fat in the belly area, also called central adiposity, which is associated with insulin resistance and an increased risk of type 2 diabetes , cardiovascular disease , and certain breast cancers. [5,7-9] It also lowers levels of the hormone leptin (that promotes satiety) while increasing the hormone ghrelin (that increases appetite). [3]

Tips to Help Control Stress

• Mindful eating. When we “stress-eat,” we eat quickly without noticing what or how much we’re eating, which can lead to weight gain. Mindful eating practices counteract stress by encouraging deep breaths, making thoughtful food choices, focusing attention on the meal, and chewing food slowly and thoroughly. This increases enjoyment of the meal and improves digestion. Mindful eating can also help us realize when we are eating not because of physiological hunger but because of psychological turbulence, which may lead us to eat more as a coping mechanism.

• Research has also found that meditation training may lengthen or prevent the shortening of protein structures called telomeres. [11] Telomeres generally shrink in length with age and in those experiencing chronic stress; this can lead to the death of cells and inflammation, which is associated with an increased risk of age-related dementia and cardiovascular disease. Meditation practice has been associated in some studies with greater telomere activity and length in response to a reduction in anxiety, chronic stress, and cortisol levels.
• Mental health counseling or other social support. Feeling alone can add to stress. It can help to talk through feelings and concerns with a trusted individual. Often, just realizing that you are not alone and that your feelings are not unusual can help lower stress.
• Practicing work-life balance. Use vacation and personal time, or just set aside an hour a day. A periodic escape from the pressures of work can do wonders to reduce stress, increase productivity, and decrease the risk of physical and mental illnesses that are associated with workplace burnout.

• Good sleep hygiene. Stress can cause a heightened sense of alertness, which delays the onset of sleep as well as cause interrupted sleep throughout the night. This can prevent one from entering the deeper sleep stages in which the body repairs and grows tissue and supports a healthy immune system. The REM (rapid eye movement) sleep stage in particular helps with mood regulation and memory. Aim for 7-9 hours of sleep a night by slowing down about 30 minutes before bedtime. Controlling stress through the other tips listed above can also improve sleep quality.
• Waxenbaum JA, Reddy V, Varacallo M. Anatomy, Autonomic Nervous System. [Updated 2020 Apr 5]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan. Available from: https://www.ncbi.nlm.nih.gov/books/NBK539845/
• Gonzalez MJ, Miranda-Massari JR. Diet and stress. Psychiatric Clinics . 2014 Dec 1;37(4):579-89.
• Sinha R. Role of addiction and stress neurobiology on food intake and obesity. Biological psychology . 2018 Jan 1;131:5-13.
• Geiker NR, Astrup A, Hjorth MF, Sjödin A, Pijls L, Markus CR. Does stress influence sleep patterns, food intake, weight gain, abdominal obesity and weight loss interventions and vice versa?. Obesity Reviews . 2018 Jan;19(1):81-97.
• Torres SJ, Nowson CA. Relationship between stress, eating behavior, and obesity. Nutrition . 2007 Nov 1;23(11-12):887-94.
• Chao AM, Jastreboff AM, White MA, Grilo CM, Sinha R. Stress, cortisol, and other appetite‐related hormones: Prospective prediction of 6‐month changes in food cravings and weight. Obesity . 2017 Apr;25(4):713-20.  *Multiple authors report funding disclosures.
• Huang T, Qi Q, Zheng Y, Ley SH, Manson JE, Hu FB, Qi L. Genetic predisposition to central obesity and risk of type 2 diabetes: two independent cohort studies. Diabetes Care . 2015 Jul 1;38(7):1306-11.
• Harris HR, Willett WC, Terry KL, Michels KB. Body fat distribution and risk of premenopausal breast cancer in the Nurses’ Health Study II. Journal of the National Cancer Institute . 2011 Feb 2;103(3):273-8.
• Dale CE, Fatemifar G, Palmer TM, White J, Prieto-Merino D, Zabaneh D, Engmann JE, Shah T, Wong A, Warren HR, McLachlan S. Causal associations of adiposity and body fat distribution with coronary heart disease, stroke subtypes, and type 2 diabetes mellitus: a Mendelian randomization analysis. Circulation . 2017 Jun 13;135(24):2373-88.
• Soltani H, Keim NL, Laugero KD. Diet Quality for Sodium and Vegetables Mediate Effects of Whole Food Diets on 8-Week Changes in Stress Load. Nutrients . 2018 Nov;10(11):1606.
• Conklin QA, Crosswell AD, Saron CD, Epel ES. Meditation, stress processes, and telomere biology. Current opinion in psychology . 2019 Aug 1;28:92-101.

Last reviewed October 2021

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• v.368; 2020

Clinical Updates

Quality improvement into practice, adam backhouse.

1 North London Partners in Health and Care, Islington CCG, London N1 1TH, UK

Fatai Ogunlayi

2 Institute of Applied Health Research, Public Health, University of Birmingham, B15 2TT, UK

What you need to know

• Thinking of quality improvement (QI) as a principle-based approach to change provides greater clarity about ( a ) the contribution QI offers to staff and patients, ( b ) how to differentiate it from other approaches, ( c ) the benefits of using QI together with other change approaches
• QI is not a silver bullet for all changes required in healthcare: it has great potential to be used together with other change approaches, either concurrently (using audit to inform iterative tests of change) or consecutively (using QI to adapt published research to local context)
• As QI becomes established, opportunities for these collaborations will grow, to the benefit of patients.

The benefits to front line clinicians of participating in quality improvement (QI) activity are promoted in many health systems. QI can represent a valuable opportunity for individuals to be involved in leading and delivering change, from improving individual patient care to transforming services across complex health and care systems. 1

However, it is not clear that this promotion of QI has created greater understanding of QI or widespread adoption. QI largely remains an activity undertaken by experts and early adopters, often in isolation from their peers. 2 There is a danger of a widening gap between this group and the majority of healthcare professionals.

This article will make it easier for those new to QI to understand what it is, where it fits with other approaches to improving care (such as audit or research), when best to use a QI approach, making it easier to understand the relevance and usefulness of QI in delivering better outcomes for patients.

How this article was made

AB and FO are both specialist quality improvement practitioners and have developed their expertise working in QI roles for a variety of UK healthcare organisations. The analysis presented here arose from AB and FO’s observations of the challenges faced when introducing QI, with healthcare providers often unable to distinguish between QI and other change approaches, making it difficult to understand what QI can do for them.

How is quality improvement defined?

There are many definitions of QI ( box 1 ). The BMJ ’s Quality Improvement series uses the Academy of Medical Royal Colleges definition. 6 Rather than viewing QI as a single method or set of tools, it can be more helpful to think of QI as based on a set of principles common to many of these definitions: a systematic continuous approach that aims to solve problems in healthcare, improve service provision, and ultimately provide better outcomes for patients.

Definitions of quality improvement

• Improvement in patient outcomes, system performance, and professional development that results from a combined, multidisciplinary approach in how change is delivered. 3
• The delivery of healthcare with improved outcomes and lower cost through continuous redesigning of work processes and systems. 4
• Using a systematic change method and strategies to improve patient experience and outcome. 5
• To make a difference to patients by improving safety, effectiveness, and experience of care by using understanding of our complex healthcare environment, applying a systematic approach, and designing, testing, and implementing changes using real time measurement for improvement. 6

In this article we discuss QI as an approach to improving healthcare that follows the principles outlined in box 2 ; this may be a useful reference to consider how particular methods or tools could be used as part of a QI approach.

Principles of QI

• Primary intent— To bring about measurable improvement to a specific aspect of healthcare delivery, often with evidence or theory of what might work but requiring local iterative testing to find the best solution. 7
• Employing an iterative process of testing change ideas— Adopting a theory of change which emphasises a continuous process of planning and testing changes, studying and learning from comparing the results to a predicted outcome, and adapting hypotheses in response to results of previous tests. 8 9
• Consistent use of an agreed methodology— Many different QI methodologies are available; commonly cited methodologies include the Model for Improvement, Lean, Six Sigma, and Experience-based Co-design. 4 Systematic review shows that the choice of tools or methodologies has little impact on the success of QI provided that the chosen methodology is followed consistently. 10 Though there is no formal agreement on what constitutes a QI tool, it would include activities such as process mapping that can be used within a range of QI methodological approaches. NHS Scotland’s Quality Improvement Hub has a glossary of commonly used tools in QI. 11
• Empowerment of front line staff and service users— QI work should engage staff and patients by providing them with the opportunity and skills to contribute to improvement work. Recognition of this need often manifests in drives from senior leadership or management to build QI capability in healthcare organisations, but it also requires that frontline staff and service users feel able to make use of these skills and take ownership of improvement work. 12
• Using data to drive improvement— To drive decision making by measuring the impact of tests of change over time and understanding variation in processes and outcomes. Measurement for improvement typically prioritises this narrative approach over concerns around exactness and completeness of data. 13 14
• Scale-up and spread, with adaptation to context— As interventions tested using a QI approach are scaled up and the degree of belief in their efficacy increases, it is desirable that they spread outward and be adopted by others. Key to successful diffusion of improvement is the adaption of interventions to new environments, patient and staff groups, available resources, and even personal preferences of healthcare providers in surrounding areas, again using an iterative testing approach. 15 16

What other approaches to improving healthcare are there?

Taking considered action to change healthcare for the better is not new, but QI as a distinct approach to improving healthcare is a relatively recent development. There are many well established approaches to evaluating and making changes to healthcare services in use, and QI will only be adopted more widely if it offers a new perspective or an advantage over other approaches in certain situations.

A non-systematic literature scan identified the following other approaches for making change in healthcare: research, clinical audit, service evaluation, and clinical transformation. We also identified innovation as an important catalyst for change, but we did not consider it an approach to evaluating and changing healthcare services so much as a catch-all term for describing the development and introduction of new ideas into the system. A summary of the different approaches and their definition is shown in box 3 . Many have elements in common with QI, but there are important difference in both intent and application. To be useful to clinicians and managers, QI must find a role within healthcare that complements research, audit, service evaluation, and clinical transformation while retaining the core principles that differentiate it from these approaches.

Alternatives to QI

• Research— The attempt to derive generalisable new knowledge by addressing clearly defined questions with systematic and rigorous methods. 17
• Clinical audit— A way to find out if healthcare is being provided in line with standards and to let care providers and patients know where their service is doing well, and where there could be improvements. 18
• Service evaluation— A process of investigating the effectiveness or efficiency of a service with the purpose of generating information for local decision making about the service. 19
• Clinical transformation— An umbrella term for more radical approaches to change; a deliberate, planned process to make dramatic and irreversible changes to how care is delivered. 20
• Innovation— To develop and deliver new or improved health policies, systems, products and technologies, and services and delivery methods that improve people’s health. Health innovation responds to unmet needs by employing new ways of thinking and working. 21

Why do we need to make this distinction for QI to succeed?

Improvement in healthcare is 20% technical and 80% human. 22 Essential to that 80% is clear communication, clarity of approach, and a common language. Without this shared understanding of QI as a distinct approach to change, QI work risks straying from the core principles outlined above, making it less likely to succeed. If practitioners cannot communicate clearly with their colleagues about the key principles and differences of a QI approach, there will be mismatched expectations about what QI is and how it is used, lowering the chance that QI work will be effective in improving outcomes for patients. 23

There is also a risk that the language of QI is adopted to describe change efforts regardless of their fidelity to a QI approach, either due to a lack of understanding of QI or a lack of intention to carry it out consistently. 9 Poor fidelity to the core principles of QI reduces its effectiveness and makes its desired outcome less likely, leading to wasted effort by participants and decreasing its credibility. 2 8 24 This in turn further widens the gap between advocates of QI and those inclined to scepticism, and may lead to missed opportunities to use QI more widely, consequently leading to variation in the quality of patient care.

Without articulating the differences between QI and other approaches, there is a risk of not being able to identify where a QI approach can best add value. Conversely, we might be tempted to see QI as a “silver bullet” for every healthcare challenge when a different approach may be more effective. In reality it is not clear that QI will be fit for purpose in tackling all of the wicked problems of healthcare delivery and we must be able to identify the right tool for the job in each situation. 25 Finally, while different approaches will be better suited to different types of challenge, not having a clear understanding of how approaches differ and complement each other may mean missed opportunities for multi-pronged approaches to improving care.

What is the relationship between QI and other approaches such as audit?

Academic journals, healthcare providers, and “arms-length bodies” have made various attempts to distinguish between the different approaches to improving healthcare. 19 26 27 28 However, most comparisons do not include QI or compare QI to only one or two of the other approaches. 7 29 30 31 To make it easier for people to use QI approaches effectively and appropriately, we summarise the similarities, differences, and crossover between QI and other approaches to tackling healthcare challenges ( fig 1 ).

How quality improvement interacts with other approaches to improving healthcare

QI and research

Research aims to generate new generalisable knowledge, while QI typically involves a combination of generating new knowledge or implementing existing knowledge within a specific setting. 32 Unlike research, including pragmatic research designed to test effectiveness of interventions in real life, QI does not aim to provide generalisable knowledge. In common with QI, research requires a consistent methodology. This method is typically used, however, to prove or disprove a fixed hypothesis rather than the adaptive hypotheses developed through the iterative testing of ideas typical of QI. Both research and QI are interested in the environment where work is conducted, though with different intentions: research aims to eliminate or at least reduce the impact of many variables to create generalisable knowledge, whereas QI seeks to understand what works best in a given context. The rigour of data collection and analysis required for research is much higher; in QI a criterion of “good enough” is often applied.

Relationship with QI

Though the goal of clinical research is to develop new knowledge that will lead to changes in practice, much has been written on the lag time between publication of research evidence and system-wide adoption, leading to delays in patients benefitting from new treatments or interventions. 33 QI offers a way to iteratively test the conditions required to adapt published research findings to the local context of individual healthcare providers, generating new knowledge in the process. Areas with little existing knowledge requiring further research may be identified during improvement activities, which in turn can form research questions for further study. QI and research also intersect in the field of improvement science, the academic study of QI methods which seeks to ensure QI is carried out as effectively as possible. 34

Scenario: QI for translational research

Newly published research shows that a particular physiotherapy intervention is more clinically effective when delivered in short, twice-daily bursts rather than longer, less frequent sessions. A team of hospital physiotherapists wish to implement the change but are unclear how they will manage the shift in workload and how they should introduce this potentially disruptive change to staff and to patients.

• Before continuing reading think about your own practice— How would you approach this situation, and how would you use the QI principles described in this article?

Adopting a QI approach, the team realise that, although the change they want to make is already determined, the way in which it is introduced and adapted to their wards is for them to decide. They take time to explain the benefits of the change to colleagues and their current patients, and ask patients how they would best like to receive their extra physiotherapy sessions.

The change is planned and tested for two weeks with one physiotherapist working with a small number of patients. Data are collected each day, including reasons why sessions were missed or refused. The team review the data each day and make iterative changes to the physiotherapist’s schedule, and to the times of day the sessions are offered to patients. Once an improvement is seen, this new way of working is scaled up to all of the patients on the ward.

The findings of the work are fed into a service evaluation of physiotherapy provision across the hospital, which uses the findings of the QI work to make recommendations about how physiotherapy provision should be structured in the future. People feel more positive about the change because they know colleagues who have already made it work in practice.

QI and clinical audit

Clinical audit is closely related to QI: it is often used with the intention of iteratively improving the standard of healthcare, albeit in relation to a pre-determined standard of best practice. 35 When used iteratively, interspersed with improvement action, the clinical audit cycle adheres to many of the principles of QI. However, in practice clinical audit is often used by healthcare organisations as an assurance function, making it less likely to be carried out with a focus on empowering staff and service users to make changes to practice. 36 Furthermore, academic reviews of audit programmes have shown audit to be an ineffective approach to improving quality due to a focus on data collection and analysis without a well developed approach to the action section of the audit cycle. 37 Clinical audits, such as the National Clinical Audit Programme in the UK (NCAPOP), often focus on the management of specific clinical conditions. QI can focus on any part of service delivery and can take a more cross-cutting view which may identify issues and solutions that benefit multiple patient groups and pathways. 30

Audit is often the first step in a QI process and is used to identify improvement opportunities, particularly where compliance with known standards for high quality patient care needs to be improved. Audit can be used to establish a baseline and to analyse the impact of tests of change against the baseline. Also, once an improvement project is under way, audit may form part of rapid cycle evaluation, during the iterative testing phase, to understand the impact of the idea being tested. Regular clinical audit may be a useful assurance tool to help track whether improvements have been sustained over time.

Scenario: Audit and QI

A foundation year 2 (FY2) doctor is asked to complete an audit of a pre-surgical pathway by looking retrospectively through patient documentation. She concludes that adherence to best practice is mixed and recommends: “Remind the team of the importance of being thorough in this respect and re-audit in 6 months.” The results are presented at an audit meeting, but a re-audit a year later by a new FY2 doctor shows similar results.

• Before continuing reading think about your own practice— How would you approach this situation, and how would you use the QI principles described in this paper?

Contrast the above with a team-led, rapid cycle audit in which everyone contributes to collecting and reviewing data from the previous week, discussed at a regular team meeting. Though surgical patients are often transient, their experience of care and ideas for improvement are captured during discharge conversations. The team identify and test several iterative changes to care processes. They document and test these changes between audits, leading to sustainable change. Some of the surgeons involved work across multiple hospitals, and spread some of the improvements, with the audit tool, as they go.

QI and service evaluation

In practice, service evaluation is not subject to the same rigorous definition or governance as research or clinical audit, meaning that there are inconsistencies in the methodology for carrying it out. While the primary intent for QI is to make change that will drive improvement, the primary intent for evaluation is to assess the performance of current patient care. 38 Service evaluation may be carried out proactively to assess a service against its stated aims or to review the quality of patient care, or may be commissioned in response to serious patient harm or red flags about service performance. The purpose of service evaluation is to help local decision makers determine whether a service is fit for purpose and, if necessary, identify areas for improvement.

Service evaluation may be used to initiate QI activity by identifying opportunities for change that would benefit from a QI approach. It may also evaluate the impact of changes made using QI, either during the work or after completion to assess sustainability of improvements made. Though likely planned as separate activities, service evaluation and QI may overlap and inform each other as they both develop. Service evaluation may also make a judgment about a service’s readiness for change and identify any barriers to, or prerequisites for, carrying out QI.

QI and clinical transformation

Clinical transformation involves radical, dramatic, and irreversible change—the sort of change that cannot be achieved through continuous improvement alone. As with service evaluation, there is no consensus on what clinical transformation entails, and it may be best thought of as an umbrella term for the large scale reform or redesign of clinical services and the non-clinical services that support them. 20 39 While it is possible to carry out transformation activity that uses elements of QI approach, such as effective engagement of the staff and patients involved, QI which rests on iterative test of change cannot have a transformational approach—that is, one-off, irreversible change.

There is opportunity to use QI to identify and test ideas before full scale clinical transformation is implemented. This has the benefit of engaging staff and patients in the clinical transformation process and increasing the degree of belief that clinical transformation will be effective or beneficial. Transformation activity, once completed, could be followed up with QI activity to drive continuous improvement of the new process or allow adaption of new ways of working. As interventions made using QI are scaled up and spread, the line between QI and transformation may seem to blur. The shift from QI to transformation occurs when the intention of the work shifts away from continuous testing and adaptation into the wholesale implementation of an agreed solution.

Scenario: QI and clinical transformation

An NHS trust’s human resources (HR) team is struggling to manage its junior doctor placements, rotas, and on-call duties, which is causing tension and has led to concern about medical cover and patient safety out of hours. A neighbouring trust has launched a smartphone app that supports clinicians and HR colleagues to manage these processes with the great success.

This problem feels ripe for a transformation approach—to launch the app across the trust, confident that it will solve the trust’s problems.

• Before continuing reading think about your own organisation— What do you think will happen, and how would you use the QI principles described in this article for this situation?

Outcome without QI

Unfortunately, the HR team haven’t taken the time to understand the underlying problems with their current system, which revolve around poor communication and clarity from the HR team, based on not knowing who to contact and being unable to answer questions. HR assume that because the app has been a success elsewhere, it will work here as well.

People get excited about the new app and the benefits it will bring, but no consideration is given to the processes and relationships that need to be in place to make it work. The app is launched with a high profile campaign and adoption is high, but the same issues continue. The HR team are confused as to why things didn’t work.

Outcome with QI

Although the app has worked elsewhere, rolling it out without adapting it to local context is a risk – one which application of QI principles can mitigate.

HR pilot the app in a volunteer specialty after spending time speaking to clinicians to better understand their needs. They carry out several tests of change, ironing out issues with the process as they go, using issues logged and clinician feedback as a source of data. When they are confident the app works for them, they expand out to a directorate, a division, and finally the transformational step of an organisation-wide rollout can be taken.

Education into practice

Next time when faced with what looks like a quality improvement (QI) opportunity, consider asking:

• How do you know that QI is the best approach to this situation? What else might be appropriate?
• Have you considered how to ensure you implement QI according to the principles described above?
• Is there opportunity to use other approaches in tandem with QI for a more effective result?

How patients were involved in the creation of this article

This article was conceived and developed in response to conversations with clinicians and patients working together on co-produced quality improvement and research projects in a large UK hospital. The first iteration of the article was reviewed by an expert patient, and, in response to their feedback, we have sought to make clearer the link between understanding the issues raised and better patient care.

This article is part of the Quality Improvement series ( https://www.bmj.com/quality-improvement ) produced by The BMJ in partnership with and funded by The Health Foundation.

Contributors: This work was initially conceived by AB. AB and FO were responsible for the research and drafting of the article. AB is the guarantor of the article.

Competing interests: We have read and understood BMJ policy on declaration of interests and have no relevant interests to declare.

Provenance and peer review: This article is part of a series commissioned by The BMJ based on ideas generated by a joint editorial group with members from the Health Foundation and The BMJ , including a patient/carer. The BMJ retained full editorial control over external peer review, editing, and publication. Open access fees and The BMJ ’s quality improvement editor post are funded by the Health Foundation.

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