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PRISMA statement. PRISMA statement establishes the methodological requirements that a systematic review with meta-analysis must comply.
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PRISMA statement. PRISMA statement establishes the methodological requirements that a systematic review with meta-analysis must comply.
Combining studies in meta-analysis. Combining studies in meta-analysis uses a weighting model. The two most used are the fixed effect model and the random effects model.
Heterogeneity in meta-analysis. The study of heterogeneity in meta-analysis is an essential part of its elaboration. Available methods are described.