Age at menarche and comparison of the gr
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Seiji Ohsawa; Cheng-Ye Ji; Naomi Kasai
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Article
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1997
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John Wiley and Sons
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English
โ 113 KB
๐ 2 views
The median menarcheal ages (MMAs) of Chinese girls in 1991 were calculated by using the status quo method and probit analysis in 64,322 schoolgirls 8-18 years of age. The sample was randomly selected from 29 provinces of China. The MMAs were 13.01 ยฑ 1.19 and 13.64 ยฑ 1.24 years for urban and rural gi