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BJU Int. 2015 Jun;115(6):978-86. doi: 10.1111/bju.13010. Epub 2015 Mar 2.

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

Author information

1
The Institute of Psychiatry, Psychology and Neuroscience, London, UK.
2
South London and Maudsley NHS Foundation Trust, London, UK.
3
King's College London Medical School, King's College London, London, UK.
4
King's College NHS Foundation Trust, London, UK.

Abstract

OBJECTIVE:

To systematically review and create nomograms of 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:

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 (SD) 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 (SD) 9.16 (1.57) cm] and stretched length [n = 14,160, mean (SD) 13.24 (1.89) cm], erect length [n = 692, mean (SD) 13.12 (1.66) cm], flaccid circumference [n = 9407, mean (SD) 9.31 (0.90) cm], and erect circumference [n = 381, mean (SD) 11.66 (1.10) cm] 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.

LIMITATIONS:

relatively few erect measurements were conducted in a clinical setting and the greatest variability between studies was seen with flaccid stretched length.

CONCLUSIONS:

Penis size nomograms may be useful in clinical and therapeutic settings to counsel men and for academic research.

KEYWORDS:

circumference; girth; length; nomogram; penis; systematic review

Comment in

PMID:
25487360
DOI:
10.1111/bju.13010
[Indexed for MEDLINE]
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