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

作者：Doering Stephan

来源：Zeitschrift für Psychosomatische Medizin und Psychotherapie, 2015, 61(2): 206-209.

DOI：10.1111/bju.13010

• penis
• length
• girth
• circumference
• nomogram
• systematic review

ObjectiveTo systematically review and create nomograms of flaccid and erect penile size measurements.
MethodsStudy 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 20000 observations from the normal distribution to generate nomograms of penis size.
ResultsNomograms for flaccid pendulous [n = 10704, mean (sd) 9.16(1.57)cm] and stretched length [n = 14160, 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.
ConclusionsPenis size nomograms may be useful in clinical and therapeutic settings to counsel men and for academic research.

• 出版日期2015