Qualitative Research Methods

Qualitative research investigates the meanings, experiences, and processes behind health and health care, using methods such as interviews, focus groups, and observation to generate textual rather than numerical data. Rather than measuring how often or how much, it asks how and why, making it essential for understanding patient experience, behaviour, context, and the implementation of interventions.

Definition

Qualitative research is a family of inquiry approaches that collect and interpret non-numerical data, such as interview transcripts, observations, and documents, to understand meaning, experience, and social process, with credibility established through systematic analysis and transparent reflexive reporting rather than statistical inference.

Scope

This topic introduces the major qualitative traditions and methods, the kinds of questions they answer, how their data are analysed, and how rigour and trustworthiness are judged and reported. It treats qualitative research as a distinct form of evidence within evidence-based practice and offers no clinical instructions.

Core questions

• What questions about health are best answered qualitatively rather than quantitatively?
• How are qualitative data collected and analysed (for example by thematic or framework analysis)?
• How is rigour, or trustworthiness, established and reported in qualitative research?

Key concepts

• Interviews and focus groups
• Participant observation
• Thematic analysis
• Framework analysis
• Grounded theory
• Reflexivity
• Trustworthiness and saturation

Mechanisms

Qualitative studies sample purposively for information-rich cases and collect data through interviews, focus groups, or observation until further data add little new understanding. Analysis is interpretive and systematic: thematic analysis identifies and organizes patterns of meaning across a dataset (Braun & Clarke, 2006), while the framework method offers a structured, matrix-based approach suited to multidisciplinary health teams (Gale et al., 2013). Rigour rests on reflexivity, audit trails, and transparent reporting rather than on statistical control, and standards such as COREQ make the research process inspectable (Tong et al., 2007).

Clinical relevance

Qualitative evidence illuminates patient and clinician experience, acceptability, barriers to care, and how interventions work in real settings, complementing quantitative effectiveness evidence in evidence-based practice. This entry describes how such evidence is produced and appraised and is not a basis for individual clinical decisions.

Evidence & guidelines

Reporting standards such as the Consolidated Criteria for Reporting Qualitative Research (COREQ) structure transparent accounts of interview- and focus-group studies (Tong et al., 2007). Widely used analytic approaches include thematic analysis (Braun & Clarke, 2006) and the framework method (Gale et al., 2013); broader methodological texts describe the major qualitative traditions and their designs (Creswell & Poth, 2018).

History

Qualitative inquiry developed across anthropology, sociology, and psychology, with traditions such as ethnography, grounded theory, and phenomenology entering health research over the later twentieth century. As evidence-based practice matured, qualitative evidence gained recognition as essential for questions of meaning and implementation, supported by accessible analytic frameworks (Braun & Clarke, 2006; Gale et al., 2013) and dedicated reporting standards (Tong et al., 2007).

Debates

How should the quality of qualitative evidence be judged?

Because qualitative research does not rely on statistical inference, criteria for rigour, such as trustworthiness, reflexivity, and transparent reporting, differ from quantitative appraisal, and there is ongoing discussion about whether standardized checklists capture or constrain qualitative quality.

Key figures

• Virginia Braun
• Victoria Clarke
• John Creswell
• Allison Tong

Seminal works

• braun-clarke-2006
• tong-2007-coreq
• gale-2013-framework

Frequently asked questions

How does qualitative research differ from quantitative research?

Qualitative research generates and interprets non-numerical data to understand meaning, experience, and process, asking how and why, whereas quantitative research measures and counts to estimate frequency, association, or effect; the two answer different kinds of question and often complement each other.

What does trustworthiness mean in qualitative research?

It is the qualitative counterpart to validity and reliability, established through systematic analysis, reflexivity about the researcher's influence, audit trails, and transparent reporting, so that readers can judge how credible and dependable the findings are.