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Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15,521 men

Research output: Contribution to journalReview article

David Veale, Sarah Miles, Sally Bramley, Gordon Muir, John Hodsoll

Original languageEnglish
Pages (from-to)978-986
Number of pages9
JournalBJU INTERNATIONAL
Volume115
Issue number6
Early online date2 Mar 2015
DOIs
StatePublished - 1 Jun 2015

King's Authors

Abstract

Objectives
To systematically review and create nomograms on flaccid and erect penile size measurements.
Methods
Study key eligibility criteria: measurement of penis size by a health professional using a standard procedure; a minimum of 50 participants per sample
Exclusion criteria were samples with a congenital or acquired penile abnormality. previous surgery, complaint of small penis size or erectile dysfunction
Synthesis methods: Calculation of a weighted mean and pooled standard deviation and simulation of 20,000 observations from the normal distribution to generate nomograms of penis size.
Results
Nomograms for flaccid pendulous (n = 10,704, mean 9.16cm, sd 1.57) and stretched length (n=14,160, mean 13.24cm, sd 1.89), erect length (n = 692, mean 13.12cm, sd 1.66), flaccid circumference (n = 9,407, mean 9.31cm, sd 0.90); and erect circumference (n = 381, mean 11.66cm, sd 1.10) were constructed. Consistent and strongest significant correlation was between flaccid stretched or erect length and height, which ranged from r = 0.2 to 0.6.
Conclusions
penis size nomograms may be useful in clinical and therapeutic settings to counsel men and for academic research.
Limitations: a relatively small number of erect measurements were conducted in a clinical setting and the greatest variability between studies was with flaccid stretched length.

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