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Age at menarche: Nicolai Edvard Ravn's data on 3385 women in mid-19th century Denmark
Annals of Human Biology
|January 1, 1983
Medical observations on 3385 Danish women, from the 1840s, indicate that at that time the average age at menarche was 16 years and 3 months for Denmark as a whole. Since then, age at menarche has decreased, with an average rate of a little over 2 1/2 months per decade.
Medical observations on 3385 Danish women, from the 1840s, indicate that at that time the average age at menarche was 16 years and 3 months for Denmark as a whole. Since then, age at menarche has decreased, with an average rate of a little over 2 1/2 months per decade.