To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

Penile size in healthy Ni… - University of Gothenburg, Sweden Till startsida
To content Read more about how we use cookies on

Penile size in healthy Nigerian newborns: country-based reference values and international comparisons.

Journal article
Authors Oo Jarrett
Oo Ayoola
B Jonsson
Kerstin Albertsson-Wikland
Em Ritzen
Published in Acta paediatrica (Oslo, Norway : 1992)
Volume 103
Issue 4
Pages 442-446
ISSN 1651-2227
Publication year 2014
Published at Institute of Clinical Sciences, Department of Pediatrics
Pages 442-446
Language en
Subject categories Pediatrics


To establish normal reference values for penile size in Nigerian newborn boys and to compare those values with standards from other populations METHODS: A total number of 261 healthy newborn boys delivered at gestational ages of 28 weeks or more were enrolled in the study. Penile lengths and widths were measured within 72 hours of birth RESULTS: The mean (+SD) penile length in the 261 Nigerian males studied was 3.4 + 0.48cm, while the mean mid-shaft diameter was 1.2 + 0.14cm. Compared to data from other populations, Nigerian newborn boys had similar penile sizes to those reported for US Caucasian boys (mean 3.4cm), but significantly greater penile sizes than those reported for boys from China and Hong Kong (mean 3.0 and 3.1cm, respectively; both p< 0.001). There was a slight, but significant, difference in size between Nigerian and Malaysian boys, with Malaysian boys having greater penile sizes (mean 3.5cm; p< 0.05) CONCLUSION: A Nigerian newborn with a penile length of less than 2.39cm can be considered to have a micropenis. This article is protected by copyright. All rights reserved.

Page Manager: Webmaster|Last update: 9/11/2012

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?