Discussion Post: The Validity of Meta-Analyses
Epidemiological meta-analyses are quantitative types of systematic reviews, in which summary measures of exposure-outcome associations are calculated based on the results of a selection of existing studies. The goal of meta-analysis is to obtain a robust understanding of the relationship between an exposure and a health outcome. Existing studies may, of course, have strengths and limitations of their own. Similarly, the methodology of meta-analysis has its critics.
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