Seasonal variation in anencephalus in Canada.
- 1 March 1975
- journal article
- Published by BMJ in Journal of Epidemiology and Community Health
- Vol. 29 (1) , 22-26
- https://doi.org/10.1136/jech.29.1.22
Abstract
A study of the monthly numbers of stillbirths and of deaths due to anencephalus in Canada from 1954 to 1962 showed a weak tendency to a winter excess of affected births. The seasonal trend was more marked in the Prarie provinces and in Quebec than elsewhere; the maximum rate of anencephalus occurrence was in October to December in the Prairies and in British Columbia, and in January to March in other regions.Keywords
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