Meta Analysis

A systematic review uses a qualitative method in the collection and inclusion of studies. The results of those independent studies that have met the requirements are then synthesized, summaries are produced and conclusions may be used to evaluate therapeutic effectiveness, plan new studies, etc.

The term Meta analysis is often used interchangeably with that of a systematic review but strictly speaking they are not the same. Both imply methods of combining the results of independent studies. But while a systematic review process implies a "qualitative method" a meta analysis implies "quantitative methods" or statistical methods.

Some systematic reviews employ both the qualitative and quantitative methods ie. Cochrane Systematic Reviews

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