Analysis of the Interobserver Variability in Penile Length Assessment

作者：Habous Mohamad; Muir Gordon; Tealab Alaa; Williamson Ben; Elkhouly Mohamed; Elhadek Waleed; Mahmoud Saad; Laban Osama; Binsaleh Saleh; Abdelwahab Osama; Mulhall John P; Veale David

来源：The Journal of Sexual Medicine, 2015, 12(10): 2031-2035.

DOI：10.1111/jsm.13005

• Methodology
• Penile Size Measurement
• Interobserver Errors
• Underestimate

IntroductionMany men seek penile augmentation treatmentsa standard tool for their counseling is to inform them of what is normal. Although some studies suggest good correlation between stretched and erect penile length, those that have measured stretched and erect length simultaneously have shown significant variability.
AimTo assess the accuracy of differing penile measurements with multiple observers.
MethodsWe recruited 201 adult men (mean age 49.6 years) who achieved full erection using intracavernosal injection.
Main Outcome MeasuresPenile measurements were taken by one of seven andrology specialists in a private, temperature-controlled (21 degrees C, 72 degrees F) environment. Stretched flaccid and erect length and circumference were measured. We analyzed the accuracy of each flaccid measurement using the erect measurements as a reference, for the overall patient population and for each observer.
ResultsThe mean underestimate of length from stretched flaccid to erect was 2.64cm (21.4%) and girth 2.27cm (19.5%). Interobserver variability ranged from a mean underestimate of 16-27% (length) and 15-27% (girth).
ConclusionsIn this large, multicenter, multi-observer study of penis size, flaccid measurements underestimated erect size. It also seems likely that there is significant interobserver variability. We believe erect penis measurements should be used for men being considered for treatment of small penis anxiety. Habous M, Muir G, Tealab A, Williamson B, Elkhouly M, Elhadek W, Mahmoud S, Laban O, Binsaleh S, Abdelwahab O, Mulhall JP, and Veale D. Analysis of the interobserver variability in penile length assessment. J Sex Med 2015;12:2031-2035.

• 出版日期2015-10