Step 1: Note the type of study design in included studies based on a review question.
Step 2: Identify a valid quality assessment tool appropriate for a review.
Step 3: Two or more reviewers test the tool with a sample of included studies.
Step 4: Reviewers carry out critical appraisal of included studies independently and in duplicate.
Step 5: Tabulate and summarize results of critical appraisal.
