Critical appraisal is the process of carefully and systematically examining research to judge its trustworthiness, its value and relevance in a particular context (Burls, 2009).
Why do we need to critically appraise the literature? We do this to:
References
AMSTAR (Assessment of Multiple Systematic Reviews)
AMSTAR is a 37-item assessment tool used to assess the methodological quality of systematic reviews.
Centre for Evidence-Based Medicine (CEBM): Critical appraisal tools
The Centre for Evidence-Based Medicine in Oxford (UK) provides tools and downloads for the critical appraisal of medical evidence. Sample appraisal sheets are provided together with several helpful examples.
Critical Appraisal Skills Programme (CASP)
The Critical Appraisal Skills Programme (CASP) helps people to find and interpret the best available evidence from health research.
Lists a range of critical appraisal tools related to various types of studies including systematic reviews, randomised controlled trials and meta-analyses.
EPHPP Quality Assessment Tool for Quantitative Studies
The Effective Public Health Practice Project developed the EPHPP Quality Assessment Method and Tool for quantitative studies method. The tool was developed for use in public health, and can be applied to articles of any public health topic area.
GRADE (Grading of Recommendations Assessment, Development and Evaluation)
GRADE is an approach to grade the quality of evidence and the strength of recommendations that can be applied across a wide range of interventions and types of studies.
Joanna Briggs Institute: Critical appraisal tools
Provides access to critical appraisal tools for different types of studies including systematic reviews and RCTs.
The Institute of Health Economics, Alberta, Canada have developed and implemented two scoring systems to evaluate the quality of the studies potentially eligible for inclusion in reviews: one for quantitative research reports, and one for qualitative research reports.