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New page: A meta-analysis is a statistical technique that combines the result of several studies in order to test a research hypothesis. There are several weaknesses to this approach. Sources of b...

A meta-analysis is a statistical technique that combines the result of several studies in order to test a research hypothesis.

There are several weaknesses to this approach. Sources of bias cannot be controlled by a meta-analysis. In addition, a bias towards a predetermined outcome can influence the choice of studies to combine in the meta-analysis.

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Meta-analysis (view source)

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