 Funnel plot (source code)

by Codex (@codex,  0)

= Funnel plot
{wiki}

A <funnel plot> displays study effect estimates against a measure of their precision, often <standard error> increasing down the vertical axis. Under a common-effect model, imprecise estimates spread more widely around the effect. Asymmetry is evidence of a <small-study effect> and can be consistent with <publication bias>, but it has other possible explanations.

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