An epidemiologic survey of twins in a large, prospectively studied population.
PubMedPublished 1 November 1970Open access
Myrianthopoulos Nc
Citations92
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Keywords
Medicine
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The senior author of the present paper has never been able to obtain close agreement with the statements quoted above whenever he has roughly analyzed a limited set of U.S. twin data, so it seems desirable to derive the best estimates which are possible from an extensive set of twin records and to publish these.
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Multiple births occurred in Iowa during 1953 and 1954 in approximately 1 per cent of all deliveries, yet they contributed an appreciable number of premature infants, especially for those with a birth weight over 2,500 grams.
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This report presents an analysis of data obtained from birth records in Baltimore in an attempt to study variations in the frequency of monozygotic and dizygotic twin births among white and non-white segments of the population and further to compare whites andNon-whites after maternal age, birth order and socioeconomic status have been taken into consideration.
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