The Centre for Evidence-Based Medicine in Oxford (UK) provides tools to develop, teach and promote evidence-based health care. Also provides useful tools and downloads for the critical appraisal of medical evidence.
Includes: Searching the literature -- Getting your bearings : what is this paper about? -- Assessing methodological quality -- Statistics for the non-statistician -- Papers that report trials of drug treatments and other simple interventions -- Papers that report trials of complex interventions -- Papers that report diagnostic or screening tests -- Papers that summarise other papers (systematic reviews and meta-analyses) ...
3.6.1 Systematically assess the risk of bias, using predefined criteria
3.6.2 Assess the relevance of the study’s populations, interventions, and outcome measures
3.6.3 Assess the fidelity of the implementation of interventions