title: Erect penile dimensions in a cohort of 778 Middle Eastern men: establishment of a nomogram.
abstract: BACKGROUND
  Accurate data regarding the size of the erect penis are of great importance to several disciplines working with male patients, but little high-quality research exists on the subject, particularly in different ethnic groups and for erect penis size.
  
  
  OBJECTIVE
  The aim of this study was to create a nomogram of erect penile dimensions in a large sample of Middle Eastern men.
  
  
  METHODS
  A retrospective cohort study of 778 men (mean age 43.7; range 20-82) attending urological outpatient clinics in Saudi Arabia was conducted. Exclusion criteria were age under 18 years, a presenting complaint of small or short penis, Peyronie's disease or complaint of congenital curvature, clinical hypogonadism, and previous penile surgery or trauma.
  
  
  METHODS
  Three erect penile dimensions following induction of erection using intracavernosal injection of Quadrimix.
  
  
  RESULTS
  Mean patient body mass index (BMI) was 29.09 (standard deviation [SD] 5.76). The mean suprapubic skin-to-penile tip erect length was 12.53 cm (SD 1.93); the mean erect length from the symphysis pubis to the penile tip was 14.34 cm (SD 1.86); and the mean erect shaft circumference was 11.50 cm (SD 1.74). A nomogram was constructed and statistical analysis performed, demonstrating a weak negative correlation between BMI and erect penile length measured from the suprapubic skin (r = -0.283, P < 0.000) but not from bone to tip, and a weak negative correlation between age and both erect penile length measurements (skin to tip r = -0.177, P < 0.0005; bone to tip r = -0.099, P = 0.006).
  
  
  CONCLUSIONS
  A nomogram for Middle Eastern men can be used as a standard when advising men with small penis anxiety. The importance of measuring erect size and allowing for infra-pubic fat interference in measurement is emphasized. We envisage that this tool can be used to educate and reassure concerned men about the size of their penises.
authors.affiliation: Urology Department, Elaj Medical Group, Jedda, Saudi Arabia.
authors.forename: Mohamad
authors.initials: M
authors.lastname: Habous
authors.affiliation: Urology Department, Zagazig University, Zagazig, Egypt.
authors.forename: Alaa
authors.initials: A
authors.lastname: Tealab
authors.affiliation: King's College London Hospital, London, UK.
authors.forename: Ben
authors.initials: B
authors.lastname: Williamson
authors.affiliation: Division of Urology, Department of Surgery, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia.
authors.forename: Saleh
authors.initials: S
authors.lastname: Binsaleh
authors.affiliation: Urology Department, Elaj Medical Group, Jedda, Saudi Arabia.
authors.forename: Sherif
authors.initials: S
authors.lastname: El Dawy
authors.affiliation: Urology Department, Elaj Medical Group, Jedda, Saudi Arabia.
authors.forename: Saad
authors.initials: S
authors.lastname: Mahmoud
authors.affiliation: Urology Department, Benha University, Benha, Egypt.
authors.forename: Osama
authors.initials: O
authors.lastname: Abdelwahab
authors.affiliation: Urology Department, Elaj Medical Group, Jedda, Saudi Arabia.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Nassar
authors.affiliation: Sexual and Reproductive Medicine Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
authors.forename: John P
authors.initials: JP
authors.lastname: Mulhall
authors.affiliation: Institute of Psychiatry, King's College Hospital, London, UK.
authors.forename: David
authors.identifier: http://orcid.org/0000-0002-1717-4766
authors.initials: D
authors.lastname: Veale
authors.affiliation: King's College London Hospital, London, UK.
authors.forename: Gordon
authors.initials: G
authors.lastname: Muir
mesh_terms: D000328:Adult; D015992:Body Mass Index; D006801:Humans; D008297:Male; D008875:Middle Aged; D049451:Nomograms; D009929:Organ Size; D017063:Outcome Assessment, Health Care; D010410:Penile Erection / Q000502:physiology*; D010413:Penis / Q000033:anatomy & histology* / Q000502:physiology / Q000601:surgery; D011630:Pubic Bone; D012189:Retrospective Studies; D012529:Saudi Arabia / Q000453:epidemiology
keywords: Circumference; Erect; Girth; Length; Nomogram; Penis