Seasonal variation in anencephalus in Canada.
نویسندگان
چکیده
منابع مشابه
Seasonal variation in anencephalus in Canada.
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...
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There have been statistically significant seasonal variations of annencephalus and spina bifida in each country of the United Kingdom during 1964-79 with the exception of anencephalus births in Northern Ireland. The seasonal peaks, where discernible, are in phase. Embryos appear to develop anencephalus most commonly in May-June and spina bifida in July.
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ژورنال
عنوان ژورنال: Journal of Epidemiology & Community Health
سال: 1975
ISSN: 0143-005X
DOI: 10.1136/jech.29.1.22