Evidence-Based Practice: Appraise

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Critical Appraisal Tools

Use a formal Critical Appraisal Tool ("CAT") to assess your papers. The Tool must be applied without adaptation to the appropriate study design.

Further resources

See the Application of a CAT ('CASP')

The Cochrane Common Mental Disorders group have produced 7 videos demonstrating the application of the CASP checklist to different study designs.

Hierarchy of Evidence variations

Many hierarchies have been developed to show the different levels of evidence, and to 'rank' different study designs. See some common ones below.