meta-analysis

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met·a-a·nal·y·sis

(mĕt′ə-ə-năl′ĭ-sĭs)
n.
The process or technique of synthesizing research results by using various statistical methods to retrieve, select, and combine results from previous separate but related studies.
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meta analysis. If the European meta-analysis had not excluded patients with higher Mini-Mental State Examination scores, then it would not have been possible to distinguish the particular lack of evidence for the efficacy of memantine in the mild AD group, which com prised nearly 40% of the patients overall," the investigators wrote.
Meta analysis synthesizes multiple studies, transforms study outcomes into a common unit of measurement, and employs statistical analyses to identify patterns of relationships between variables of interest (Conn & Rantz, 2003; Engle & Graney, 1990).
On the other hand, the leveling and homogenizing of data that is suspect to some researchers who question Meta analysis is not a salient issue in our method.