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The topic is about the methods used to measure penis girth and how they can affect the results.
Clinical (researcher- or clinician-measured) studies and meta-analyses consistently find the mean erect human penis length in the range of ~12.9–13.6 cm (about 5.1–5.4 in), with flaccid and stretched ...
The short answer: no robust, evidence proves reliable demographic differences in ; published analyses report small average differences in some datasets but methodological heterogeneity and heavy overl...
measure (circumference) most often with a or paper tape wrapped around the shaft at a defined point—typically the mid‑shaft or base—and sometimes with a semi‑rigid ruler used for length alongside tape...
Clinician‑measured studies of penile length and girth exist across dozens of countries and several large pooled reviews, which typically report means (with SD/SE) rather than medians; a 2025 WHO‑regio...
Penis girth (circumference) is typically measured with a flexible tape at the mid‑shaft or base of the shaft, most often in the erect state because that is the clinically and sexually relevant conditi...