Quality Appraisal
Did the reviewers appraise the quality of the primary studies? Did they use a defensible and well-defined set of criteria, or a respected quality appraisal scale?
Did two or more people do the appraisals, and was interrater agreement reported?
Was the appraisal information used in a well-defined and defensible manner in the selection of studies, or in the analysis of results?
Data Extraction
Was adequate information extracted about methodologic and administrative aspects of the study? Was adequate information about sample characteristics extracted?
Was sufficient information extracted about study findings?
Were steps taken to enhance the integrity of the dataset (e.g., were two or more people used to extract and record information for analysis)?

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