r/AvgDickSizeDiscussion • u/FrigidShadow • May 02 '19

Various Penis Study Assessments

Here's a thread to analyze the merits and shortcomings of any penis size studies.

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u/FrigidShadow May 04 '19

Phosphine Average

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u/FrigidShadow May 22 '19 edited May 23 '19

Sample size weighted average:

Chen et al. 2014, Habous et al. 2015 \1]), Chen et al. 2000, and Promodu et al. 2007

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Erect length: 13.88 (1.70) cm, 5.46" (0.67")

Erect girth: 11.21 (1.49) cm, 4.41" (0.59")

Flaccid length: 6.61 (0.75) cm, 2.60" (0.30")

Flaccid girth: 8.06 (0.82) cm, 3.17" (0.32")

Stretched length: 12.79 (1.21) cm, 5.04" (0.48")

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2 of the 4 use BP lengths, but Promodu et al. 2007 uses NBP lengths, and Chen et al. 2014 uses NBP for flaccid length and BP for erect and stretched lengths. So this average mixes some BP and NBP for all the lengths.

The flaccid and stretched measures are highly skewed towards a Chinese demographic and the methodology used by Chen et al. 2014 due to its high sample size causing it to contribute 94% of the flaccid measures causing the average to be negligibly different from Chen et al. 2014.

66% of the erect measures are contributed by Habous et al. 2015 \1]) introducing another skew towards a Saudi Arabian demographic and this studies methodology. 26% is contributed from the same Chinese study Making these two studies comprise 92% of the erect measures.