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本文对都匀地区4244名女学生月经初潮年龄的调查表明:初期年龄在10.52~15.18岁之间,平均为12.85±0.02岁;平均初潮年龄为农村大大于城市,布依族大于汉族.1971年~1980年本地区出生的女学生平均初潮年龄逐年提前,平均每年提前0.36岁.
The survey of the menarche age of 4244 female students in Duyun area shows that the initial age ranged from 10.52 to 15.18, with an average of 12.85±0.02 years; the average menarche age is greater in the countryside than in the city, and the Buyi Greater than Han. From 1971 to 1980, the average age at menarche of female students born in the region was advanced year by year, with an average annual rate of 0.36 years.