<abstract xmlns="http://www.w3.org/1999/xhtml"><sec id="j_1905-7415.0902.391_s_006_w2aab3b7c14b1b6b1aab1c17b1Aa"><h3>Background</h3><p>There is variation of the age of onset of puberty in a population. The secular trends in the timing of pubertal development have decreased in some parts of the world.</p></sec><sec id="j_1905-7415.0902.391_s_007_w2aab3b7c14b1b6b1aab1c17b2Aa"><h3>Objective</h3><p>To determine the age of pubertal development in healthy Thai boys in Khon Kaen, Thailand and compare it with that in previous studies of Thai boys.</p></sec><sec id="j_1905-7415.0902.391_s_008_w2aab3b7c14b1b6b1aab1c17b3Aa"><h3>Methods</h3><p>A descriptive, cross-sectional study was performed in 316 school boys aged 5–16 years between May and July 2011. Development of the genitals and pubic hair was determined by Tanner staging, and testicular volume was assessed using a Prader orchidometer. All boys were examined by a male pediatrician.</p></sec><sec id="j_1905-7415.0902.391_s_009_w2aab3b7c14b1b6b1aab1c17b4Aa"><h3>Results</h3><p>Genital stage of puberty in boys occurred at a median age of 11.3 years and a mean ± SD age of 11.3 ± 1.3 (mean ± SD, range 8.0–14.9) years, and pubarche occurred at a median age of 12.8 years and a mean ± SD of 12.5 ± 1.2 years (range 9.1–14.9) years.</p></sec><sec id="j_1905-7415.0902.391_s_010_w2aab3b7c14b1b6b1aab1c17b5Aa"><h3>Conclusions</h3><p>No secular trend towards earlier age at pubertal onset for gonadarche in Khon Kaen boys, but pubarche seems to be later than found in previous studies in Thai boys.</p></sec></abstract>

BackgroundThere is variation of the age of onset of puberty in a population. The secular trends in the timing of pubertal development have decreased in some parts of the world.ObjectiveTo determine the age of pubertal development in healthy Thai boys in Khon Kaen, Thailand and compare it with that in previous studies of Thai boys.MethodsA descriptive, cross-sectional study was performed in 316 school boys aged 5–16 years between May and July 2011. Development of the genitals and pubic hair was determined by Tanner staging, and testicular volume was assessed using a Prader orchidometer. All boys were examined by a male pediatrician.ResultsGenital stage of puberty in boys occurred at a median age of 11.3 years and a mean ± SD age of 11.3 ± 1.3 (mean ± SD, range 8.0–14.9) years, and pubarche occurred at a median age of 12.8 years and a mean ± SD of 12.5 ± 1.2 years (range 9.1–14.9) years.ConclusionsNo secular trend towards earlier age at pubertal onset for gonadarche in Khon Kaen boys, but pubarche seems to be later than found in previous studies in Thai boys.

The age of onset of pubertal development in healthy Thai boys in Khon Kaen, Thailand

Asian Biomedicine

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

BackgroundThere is variation of the age of onset of puberty in a population. The secular trends in the timing of pubertal development have decreased in some...

The age of onset of pubertal development in healthy Thai boys in Khon Kaen, Thailand

Article Category: Brief communication (Original)

Published Online: Jan 31, 2017

Page range: 225 - 229

DOI: https://doi.org/10.5372/1905-7415.0902.391

Keywords
Gonadarche, pubarche, pubertal development, secular trends, Thai boy

© 2017 Noppol Kiatsopit, Ouyporn Panamonta, Chatchai Suesirisawat, Manat Panamonta

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The age of onset of pubertal development in healthy Thai boys in Khon Kaen, Thailand

Article Category: Brief communication (Original)

Published Online: Jan 31, 2017

Page range: 225 - 229

DOI: https://doi.org/10.5372/1905-7415.0902.391

KeywordsGonadarche, pubarche, pubertal development, secular trends, Thai boy

© 2017 Noppol Kiatsopit, Ouyporn Panamonta, Chatchai Suesirisawat, Manat Panamonta

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Gonadarche, pubarche, pubertal development, secular trends, Thai boy