title: Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15,521 men.
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.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: The Institute of Psychiatry, Psychology and Neuroscience, London, UK.|South London and Maudsley NHS Foundation Trust, London, UK.
authors.forename: David
authors.identifier: http://orcid.org/0000-0002-1717-4766
authors.initials: D
authors.lastname: Veale
authors.affiliation: The Institute of Psychiatry, Psychology and Neuroscience, London, UK.
authors.forename: Sarah
authors.initials: S
authors.lastname: Miles
authors.affiliation: King's College London Medical School, King's College London, London, UK.
authors.forename: Sally
authors.initials: S
authors.lastname: Bramley
authors.affiliation: King's College NHS Foundation Trust, London, UK.
authors.forename: Gordon
authors.initials: G
authors.lastname: Muir
authors.affiliation: The Institute of Psychiatry, Psychology and Neuroscience, London, UK.
authors.forename: John
authors.initials: J
authors.lastname: Hodsoll
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D006801:Humans; D008297:Male; D008875:Middle Aged; D049451:Nomograms; D009929:Organ Size / Q000502:physiology; D010410:Penile Erection / Q000502:physiology*; D010413:Penis / Q000033:anatomy & histology*; D012016:Reference Values; D055815:Young Adult
keywords: circumference; girth; length; nomogram; penis; systematic review