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月经初潮是青春发育的重要指标,它与身高等基本发育指标在一起能更好地反映一代儿童的全面发育速度。为探讨高原地区青春发育规律,1984年我们对西宁市2100名,乐都县1850名女生进行了现状调查,以对数概率单位回归法计算得半数月经初潮年龄,结果如下:一、月经初潮的平均年龄,西宁是13.77岁,乐都县是14.25岁。95%的可信限,西宁是13.63～13.91岁乐都是14.11～14.38岁,西宁女孩17岁年龄组100%来潮,而乐都则晚一年。到18岁。二、西宁市女孩平初潮年龄与近年来采用本法调查的上海市河北省等资料比较(上海13.01岁河北13.43岁),西宁晚
Menarche is an important indicator of adolescent development, which, together with basic growth indicators such as height, can better reflect the overall growth rate of children in a generation. In order to explore the law of youthful development in the plateau area, in 1984 we surveyed 2100 women in Xining City and 1850 in Ledu County. The logarithmic probability unit regression method was used to calculate the half age of menarche. The results are as follows: The average age is 13.77 years in Xining and 14.25 in Ledu County. 95% confidence limit, Xining is 13.63 ~ 13.91 years of music are 14.11 ~ 14.38 years old, 17-year-old girl Xining 100% craze, while the music is a year later. To 18 years old. Second, Xining girls age at menarche and in recent years, the use of this law survey data in Hebei Province, Shanghai (13.01 years old, Shanghai 13.43 years old in Hebei), Xining late