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Penile size in healthy Nigerian newborns: country-based reference values and international comparisons
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
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2014 (English)In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 103, no 4, 442-446 p.Article in journal (Refereed) Published
Abstract [en]

AimTo establish normal reference values for penile size in Nigerian newborn boys and to compare those values with standards from other populations. MethodsA total number of 261 healthy newborn boys delivered at gestational ages of 28weeks or more were enrolled in the study. Penile lengths and widths were measured within 72h of birth. ResultsThe 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 with 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). ConclusionA Nigerian newborn with a penile length of <2.39cm can be considered to have a micropenis.

Place, publisher, year, edition, pages
2014. Vol. 103, no 4, 442-446 p.
Keyword [en]
Gestational age, Micropenis, Nigeria, Penile size, Reference values
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-223864DOI: 10.1111/apa.12517ISI: 000332694700026OAI: oai:DiVA.org:uu-223864DiVA: diva2:716407
Available from: 2014-05-09 Created: 2014-04-28 Last updated: 2017-12-05Bibliographically approved

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