Age at Menarche of Japanese and Bolivian Girls in a Pioneer Community of Eastern Lowland of Bolivia

Bibliographic Data

ID19262017
AuthorsMasaki Moriyama (0000-0003-0568-2197, Department of Public Health, Tohoku University School of Medicine), Hiroshi Kashiwazaki (Department of Public Health, Tohoku University School of Medicine), Tai‐ichiro Takemoto (Tohoku University), Tai-ichiro TAKEMOTO (Department of Public Health, Tohoku University School of Medicine), Tsuguyoshi Suzuki (Department of Public Health, Tohoku University School of Medicine)
Year1981
Volume89
Issue3
Pages379-382
Publication date1981-01-01
Open AccessYes
TypeARTICLE
VenueThe Journal of Anthropological Society of Nippon (JOURNAL)
Journal identifiersISSN: 0003-5505 • E-ISSN: 1884-765X
PublisherAnthropological Society of Nippon (PUBLISHER • JP)
DOI10.1537/ase1911.89.379
OpenAlexW1990346153
LanguageEN
References cited1

The age at menarche of both Japanese and Bolivians living in a colony of Japanese immigrants in eastern Bolivia was examined. Maximum likelihood estimation gave mean menarcheal ages of 13, 15±1.08 for Japanese girls and of 13.08±0.89 for Bolivian girls. The girls are further classified according to the fathers' occupation (Japanese-Agriculturist I, Agriculturist II, Non-Agriculturist: Bolivian-Self-Employed, Employed, Unknown), and the age at menarche of each group was also estimated. For Japanese girls, the difference in the menarcheal age between 'Agriculturist I' (13.28) and 'Agriculturist II' (13.19) was negligible. But 'Non-Agriculturist' showed remarkably younger age at menarche as 11.70. For Bolivian girls, there was clear difference in the menarcheal age between 'Self-Employed'(12.72) and 'Employed' (13.99)

Age groups · Geography · Menarche · Significant difference · Sociology · Cardiovascular, Neuropeptides, and Oxidative Stress Research · Demography · Medicine · Rabbits: Nutrition, Reproduction, Health · Silkworms and Sericulture Research

Tools

Open DOIOpen Access