Critical appraisal is the process of judging the validity and quality of a research paper.
Major points to consider when appraising include:
Is the study valid?
What are the results, and are they significant?
Are the results applicable?
Critical Appraisal Skills Programme (CASP)
Ten questions to help you make sense of a systematic review
CASP Critical Appraisal Checklists
Includes checklists for Randomised Controlled Trials, Systematic Reviews, Qualitative Studies, Cohort Studies, Diagnostic Studies, Case Control Studies, Economic Evaluations and Clinical Prediction Rule.
A critical appraisal tool for systematic reviews that include randomised or non-randomised studies of healthcare interventions, or both
Joanna Briggs Institute (JBI) checklists
JBI’s critical appraisal tools assist in assessing the trustworthiness, relevance and results of published papers.
Crowe, M., & Sheppard, L. (2011). A review of critical appraisal tools show they lack rigor: alternative tool structure is proposed. Journal of clinical epidemiology, 64(1), 78-89. Full Text
Buccheri, R. K., & Sharifi, C. (2017). Critical appraisal tools and reporting guidelines for evidence‐based practice. Worldviews on Evidence‐Based Nursing, 14(6), 463-472. Full Text
The Medline database. BMJ, 315(7101), 180-183. Full Text
Getting your bearings (deciding what the paper is about). BMJ, 315(7102), 243-247. Full Text
Assessing the methodological quality of published papers. BMJ, 315(7103), 305-308. Full Text
Statistics for the non-statistician: different types of data need different statistical tests. BMJ, 315(7104), 364-366. Full Text
Statistics for the non-statistician. II:“Significant” relations and their pitfalls. BMJ, 315(7105), 422-425. Full Text
Papers that report drug trials. BMJ, 315(7106), 480-483. Full Text
Papers that report diagnostic or screening tests. BMJ, 315(7107), 540-543. Full Text
Papers that tell you what things cost (economic analyses). BMJ, 315(7108), 596-599. Full Text
Papers that summarise other papers (systematic reviews and meta-analyses). BMJ, 315(7109), 672-675 Full Text
Papers that go beyond numbers (qualitative research). BMJ, 315(7110), 740-743. Full Text