Pubertal correlates in black and white girls
Pubertal correlates in black and white girls
复制标题
DOI：
10.1016/j.jpeds.2005.10.020
复制
发表时间：
2006-02-01
影响因子：
5.1
通讯作者：
Daniels, S
中科院分区：
文献类型：
--
作者：
Biro, FM;Huang, B;Daniels, S
目的由于青春期成熟是一个重要的协变量的研究，评估在青少年时期发生的身体和社会的变化，我们检查青春期参数在一组美国girls.Study Design黑色和白色女孩招募在9岁，每年进行了10年。Preece-Baines模型1用于估计克里思和生长参数。月经初潮和青春期开始的年龄之间的时间趋势counted.Results该研究包括615（77.2%青春期前）白色和541（49.4%青春期前）黑人参与者。白色女孩和黑人女孩的青春期平均开始时间分别为10.2年和9.6年，初潮时间分别为12.6年和12.0年，达到坦纳生长第5阶段的时间分别为14.3年和13.6年，达到成年身高的时间分别为17.1年和16.5年。月经初潮与青春期开始时间的Pearson相关系数为0.37。结论月经初潮可作为青春期开始时间和青春期开始时间的标志。过去20年收集的数据表明，月经初潮和青春期开始之间只有中等程度的相关性（0.37 - 0.38），在过去50年中，这种相关性显著下降。这表明存在影响青春期开始年龄和初潮年龄的相似和独特因素。
Objectives Since pubertal maturation is an important covariate in studies that evaluate physical and social changes that occur during the teen years, we examined pubertal parameters in a group of US girls.Study design Black and White girls recruited at age 9 were followed annually for 10 years. Preece-Baines model 1 was used to estimate tempo and growth parameters. The temporal trend between age of menarche and onset of puberty was calculated.Results The study included 615 (77.2% prepubertal) white and 541 (49.4% prepubertal) black participants. Mean onset of puberty was 10.2 and 9.6 years in white and black girls, respectively, menarche was 12.6 and 12.0, achievement of Tanner growth stage 5 was 14.3 and 13.6, and achievement of adult height was 17.1 and 16.5 years. The Pearson's correlation coefficient between menarche and onset of puberty was .37.Conclusions Menarche is often used as a marker for onset of puberty and for timing of puberty. Data gathered over the past 20 years suggest only moderate correlation between menarche and onset of puberty (.37-.38), which has decreased significantly during the last 50 years. This suggests the existence of both similar and unique factors that impact the age at onset of puberty and age at menarche.