This chapter provides an introduction to the principles of critical appraisal and explains why critical appraisal skills are important in practice and research. Guidance is provided on how to approach the critical appraisal of different types of study including cross-sectional studies, case–control studies, cohort studies, clinical trials, systematic reviews, and qualitative studies. A worked example is provided at the end of the chapter to illustrate the process. Developing skills in critical appraisal will help readers to assess the credibility, relevance, and value of the results of research and is an essential component of practising evidence-based medicine.
Critical appraisal of clinical trials in oncology — part I
