منابع مشابه
Changing sex ratios in diabetes.
A survey of sexes and ages in patients attending the Hartlepool diabetic clinic was carried out for the 20-year period 1948-67. The proportion of men aged 50 and over rose from 25.9% in the first decade to 38.2% in the second. An attempt has been made to explain this pronounced and rapid change.
متن کاملA framework for analyzing sex-selective abortion: the example of changing sex ratios in Southern Caucasus
The paper proposes a socioeconomic framework of supply, demand, and regulation to explain the development of sex-selective abortion in several parts of the world. The framework is then applied to three countries of southern Caucasus (Armenia, Azerbaijan, and Georgia) where sex-selective abortion has developed since the collapse of the Soviet Union. The authors argue that sex-selective abortion ...
متن کاملDeclining sex ratios in Canada.
OBJECTIVE To examine the trends in the proportion of annual live births that were male in Canada and to compare the trends with those in the United States. DESIGN Analysis of census data. SETTING Canada as a whole and 4 main regions (West, Ontario, Quebec and Atlantic). SUBJECTS All live births from 1930 to 1990. OUTCOME MEASURES Sex ratio (expressed as the proportion of total live birt...
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ژورنال
عنوان ژورنال: BMJ
سال: 1971
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.4.5785.465