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Related Experiment Videos

Twinning rates in Tamilnadu.

P S Rao, S G Inbaraj, S Muthurathnam

    Journal of Epidemiology and Community Health
    |June 1, 1983
    PubMed
    Summary

    This study on human reproduction in South India found the twinning rate to be 1 in 115 births. Higher maternal age and parity correlated with increased dizygotic twinning, and twins faced significantly higher mortality risks than singletons.

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    Area of Science:

    • Human Reproduction
    • Epidemiology
    • Perinatology

    Background:

    • Twinning rates and outcomes are influenced by various demographic and genetic factors.
    • Understanding these influences is crucial for reproductive health research and clinical practice.

    Purpose of the Study:

    • To investigate twinning rates in Tamilnadu State, South India, between 1969 and 1975.
    • To analyze the relationship between twinning and maternal age, parity, and consanguinity.
    • To examine birth weights, dimensions, and infant mortality among twins.

    Main Methods:

    • Prospective observational study design.
    • Data collected from human reproduction in Tamilnadu State, South India.
    • Statistical analysis of twinning rates, birth measurements, and mortality data in relation to maternal factors.

    Main Results:

    • The overall twinning rate was observed to be 1 in 115 births.
    • Dizygotic twinning rates showed a significant positive correlation with increasing maternal age and parity.
    • Like-sexed twin pairs exhibited lower birth measurements compared to unlike-sexed pairs, with no significant difference in mortality.
    • Twins, as a group, experienced a substantially higher mortality rate than singletons.

    Conclusions:

    • Maternal age and parity are significant determinants of dizygotic twinning.
    • While birth measurements differ between twin types, mortality risks are comparable.
    • Infant mortality is considerably elevated in twin gestations compared to singleton births.

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