| Literature DB >> 605450 |
M Moriyama, H Kashiwazaki, T Takemoto, T Suzuki.
Abstract
A secular trend in age at menarche was examined for 1,333 women living in Sendai city and its surroundings by applying the birth-year cohort analysis and the cross-sectional probit analysis. The trend toward younger menarcheal ages was consistently observed by both analyses, and it started off soon after the second World War. The speed was 0.11 year/year for the observation period of 1946 to 1966.Entities:
Mesh：
Year: 1977 PMID： 605450 DOI： 10.1620/tjem.123.393
Source DB: PubMed Journal: Tohoku J Exp Med ISSN： 0040-8727 Impact factor: 1.848