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Research synthesis methods used to combine results from multiple studies on penis length measurement
There is no reliable, published number in the provided reporting that states how many men have a 6.5‑inch erect girth; major reviews report average erect girth near 4.6–4.8 inches, and the existing st...
Clinical studies use a handful of repeatable measurement protocols—flaccid, stretched (SPL), and erect lengths—measured from a proximal landmark to the distal glans tip, but wide methodological variat...