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Index/Topics/Study Heterogeneity

Study Heterogeneity

The variation in study results due to differences in sample composition, measurement methods, and other factors.

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Jan 24, 2026
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What are the typical distributions (percentiles) for erect penis length and girth in large measured datasets?

Large, clinician‑measured meta‑analyses place the typical around 13.1 cm (≈5.16 in) and erect girth (circumference) around 11.7 cm (≈4.6 in), with most men clustered within a few centimetres of those ...