Herman-Giddens M E, Wang L, Koch G
Department of Maternal and Child Health, School of Public Health, University of North Carolina at Chapel Hill, 27312, USA.
Arch Pediatr Adolesc Med. 2001 Sep;155(9):1022-8. doi: 10.1001/archpedi.155.9.1022.
Descriptive data on pubertal stages for a representative population of racially and ethnically diverse boys in the United States have not been published to our knowledge.
To determine at what ages boys in the United States reach each of the 5 sexual maturity stages for genital and pubic hair growth.
Cross-sectional survey from the National Health and Nutrition Examination Survey III (NHANES III), 1988-1994.
A population-based sample of 2114 boys aged 8 to 19 years representing 16 575 753 boys according to NHANES III sampling strategies. The sample included white, African American, and Mexican American boys.
Sexual maturity stages for genital maturation and pubic hair growth.
The median (equivalent mean) ages at stage 2 for pubic hair development of white, African American, and Mexican American boys were 12.0 (95% confidence interval [CI], 11.7-12.3), 11.2 (95% CI, 10.9-11.4), and 12.3 (95% CI, 12.1-12.6) years, respectively, and at stage 2 for genital growth were 10.1 (95% CI, 9.6-10.6), 9.5 (95% CI, 8.9-10.0), and 10.4 (95% CI, 9.6-11.1) years, respectively. All 3 groups were significantly taller and heavier than boys in previous NHANES reports and showed earlier genital maturation and pubic hair growth than previous studies based on Tanner staging. Statistically significant differences among the 3 racial/ethnic groups were found in the median ages of onset of pubic hair growth and genital development at stage 5 with and without controlling for height and weight, indicating an earlier age of attainment for the African American boys.
The median (mean) ages at the onset of genital and pubic hair growth were younger than in past studies. Additional studies are required to further evaluate these findings and to explore the public health implications.
据我们所知，美国尚未发表关于具有种族和民族多样性的代表性男孩群体青春期阶段的描述性数据。
确定美国男孩达到生殖器和阴毛生长的5个性成熟阶段的年龄。
来自1988 - 1994年第三次全国健康与营养检查调查（NHANES III）的横断面调查。
根据NHANES III抽样策略，以人群为基础的2114名8至19岁男孩的样本，代表16575753名男孩。样本包括白人、非裔美国人和墨西哥裔美国男孩。
生殖器成熟和阴毛生长的性成熟阶段。
白人、非裔美国人和墨西哥裔美国男孩阴毛发育2期的中位（等效平均）年龄分别为12.0岁（95%置信区间[CI]，11.7 - 12.3）、11.2岁（95%CI，10.9 - 11.4）和12.3岁（95%CI，12.1 - 12.6），生殖器生长2期的年龄分别为10.1岁（95%CI，9.6 - 10.6）、9.5岁（95%CI，8.9 - 10.0）和10.4岁（95%CI，9.6 - 11.1）。所有3组男孩均比之前NHANES报告中的男孩更高更重，并且与之前基于坦纳分期的研究相比，生殖器成熟和阴毛生长更早。在控制和未控制身高及体重的情况下，3个种族/民族群体在阴毛生长和生殖器发育5期的中位发病年龄存在统计学显著差异，表明非裔美国男孩达到该阶段的年龄更早。
生殖器和阴毛生长开始的中位（平均）年龄比过去的研究要小。需要进一步研究以进一步评估这些发现并探讨其对公共卫生的影响。
