Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, PR China.
J Adolesc Health. 2012 Sep;51(3):279-84. doi: 10.1016/j.jadohealth.2011.12.019. Epub 2012 Mar 15.
To provide clinically meaningful, normative reference data that describe pubertal timing indicators among urban and rural Chinese girls.
Girls of Chinese Han ethnicity from grade 1 in elementary schools through grade 12 in junior high schools in eight regions participated in China Puberty Research Collaboration from October 2010 to May 2011. At examination, stages of breast and pubic hair development were assessed by trained physicians. Data on menses were collected through questionnaire survey.
A total of 15,388 girls aged 6.0-18.9 years participated in this collaboration study. Among them, approximately 53.5% (8,238) came from rural areas. The median ages at stage 2 of breast development of Chinese girls were 9.18 (95% confidence interval: 8.91-9.44) years and at stage 2 for pubic hair growth were 11.65 (95% confidence interval: 11.41-11.90) years. Girls with body mass index ≥85th percentile had earlier age for B2 (Tanner stage 2 for breast development), B3 (Tanner stage 3 for breast development), PH2 (Tanner stage 2 for pubic hair development), PH3 (Tanner stage 3 for pubic hair development), and menarche compared with girls with body mass index < 85th percentile. Urban girls achieved PH2, PH3, and menarche at a much earlier age than rural girls, except for B2 and B3 attainment. Mean menarcheal age is 12.43 years.
This study presented up-to-date data on female pubertal timing in a national sample of Chinese Han ethnicity girls and separately for urban and rural areas.
提供具有临床意义的、规范的参考数据，描述中国城乡女孩的青春期启动指标。
2010 年 10 月至 2011 年 5 月，来自中国 8 个地区小学 1 年级至初中 12 年级的汉族女孩参加了中国青春期研究协作组。在检查时，由经过培训的医生评估乳房和阴毛发育阶段。通过问卷调查收集月经初潮数据。
共有 15388 名年龄在 6.0-18.9 岁的女孩参加了这项合作研究。其中，约 53.5%（8238 人）来自农村地区。中国女孩乳房发育 2 期的中位年龄为 9.18 岁（95%置信区间：8.91-9.44），阴毛发育 2 期的中位年龄为 11.65 岁（95%置信区间：11.41-11.90）。体重指数≥第 85 百分位数的女孩，其 B2（乳房发育的 Tanner 2 期）、B3（乳房发育的 Tanner 3 期）、PH2（阴毛发育的 Tanner 2 期）、PH3（阴毛发育的 Tanner 3 期）和初潮年龄早于体重指数<第 85 百分位数的女孩。与农村女孩相比，城市女孩 PH2、PH3 和初潮年龄更早，除了 B2 和 B3 期的差异。平均初潮年龄为 12.43 岁。
本研究提供了中国汉族女孩全国样本中女性青春期启动的最新数据，并分别对城市和农村地区进行了分析。
