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Comparison of flaccid, stretched, and erect penis length measurements in clinical studies
Measurements from large systematic reviews and clinical studies show that is a poor, inconsistent predictor of erect length for many men, while "stretched" length correlates much more closely with ere...
A flaccid length of 4.25–4.375 inches most plausibly corresponds to an erect length somewhere between roughly 5.5 and 5.94 inches, with a central estimate near 5.8–5.9 inches; this is an estimate deri...
use three common —flaccid, stretched (SFL), and erect—and which one is used changes reported averages substantially: pooled flaccid means are roughly 8.7–9.2 cm, stretched means near 12.9–13.2 cm, and...
Reported vary widely because measurement technique, observer behavior, and study design systematically change what is being recorded; flaccid measures are inherently dynamic and less reliable than ere...
Researchers attempt to standardize by defining clear anatomical landmarks, choosing which physiological state to measure (flaccid, stretched, or erect), using trained examiners and consistent tools (f...
Accurate, reliable penis‑length studies depend on standardized measurement state, consistent anatomical landmarks, trained observers using validated tools, and transparent sampling and reporting so re...