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funnel plot


Definition: a graphic method of detecting publication bias. The estimate of risk derived from a set of epidemiologic studies used in a metaanalysis is plotted against sample size. If there is no publication bias, the plot is funnel-shaped; if studies giving significant results are more likely to be published than negative studies, the plot is asymmetric.

See Also: metaanalysis

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.