Twinning Rates in Isolates
نویسندگان
چکیده
منابع مشابه
Twinning rates in Tamilnadu.
A prospective study of human reproduction was conducted in Tamilnadu State, South India, from 1969 to 1975. This paper reports twinning rates and relates these to maternal age, parity, and consanguinity. Birth weights and other dimensions at birth and infant mortality are also studied. The overall twinning rate was 1 in 115 births. Dizygotic twinning rates increased significantly with maternal ...
متن کاملTwinning rates in Ghana.
The incidence of twin births in Accra and Kumasi, the two major cities in Ghana, was investigated. In Accra, data were collected from the Korle-Bu Teaching Hospital while data were collected and analyzed from the Komfo Anokye Teaching Hospital in Kumasi. Both hospitals are the leading teaching hospitals in Ghana. The data consisted mainly of single and twin births recorded in the hospitals over...
متن کاملTwinning rates and survival of twins in rural Nepal.
BACKGROUND Twin pregnancies are common but there are few data on rates of twinning or survival of liveborn twin infants in developing countries. METHODS The rates of multiple births were calculated in a population-based cohort of married women of childbearing age who were enrolled in a randomized community trial to assess the impact of vitamin A or beta-carotene on maternal and infant health ...
متن کاملTwinning rates and social class in Great Britain.
We examined like and unlike sex twinning rates in Great Britain by social class over the period 1974-85. Although twinning rates are believed to have changed over that period, we found no evidence of differential change by social class, suggesting that any factors affecting twinning are widespread in the population.
متن کاملDizygotic twinning, birth order, female psychology, and coital rates.
It is well established that the dizygotic (DZ) twinning rate increases with maternal age until about age 38 and thereafter declines, and that within each maternal age category, it increases (apparently indefinitely) with parity [5]. Interpretation of this increase with parity is not immediately clear. One may formulate two hypotheses, one or both of which may be true. Hypothesis 1: Twin-prone w...
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ژورنال
عنوان ژورنال: Twin Research and Human Genetics
سال: 2016
ISSN: 1832-4274,1839-2628
DOI: 10.1017/thg.2016.77