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Meta-Analysis The statistical process commonly used with systematic reviews that involves combining the data from multiple individual studies into one analysis.
Systematic Review Summary of two or more primary research studies that have investigated the same specific phenomenon or question. This scientific technique defines a specific question to be answered and uses explicit predefined criteria for retrieval of studies, assessment, and synthesis of evidence from individual RCTs and other well-controlled methods. Methods used in SRs parallel those of RCTs in that each step is thoroughly documented and reproducible.