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- Title
Season of birth and recalled age at menarche.
- Authors
Boldsen, Jesper L.; Boldsen, J L
- Abstract
All 8th-form schoolgirls from the municipality of Odense in Denmark were asked at what age they reached menarche, and 886 girls (97·6%) gave this information. There is no evidence for seasonality in the time of birth but for far more girls than expected menarche occurred during winter or summer and fewer than expected during spring and autumn. This pattern appears primarily in girls living in the suburbs and was not seen in those living in central Odense. The seasonality appears to be brought about by differences in mean age at menarche according to time of the year at birth.
- Subjects
DENMARK; SEASON of birth; MENARCHE; SUBURBS; SEX differences (Biology); HOUR of birth; INFORMATION theory
- Publication
Journal of Biosocial Science, 1992, Vol 24, Issue 2, p167
- ISSN
0021-9320
- Publication type
journal article
- DOI
10.1017/S0021932000019702