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Perinatal Mortality in Twins, Australia, 1973-1980: II. Maternal Age, Lethal Congenital Malformations and Sex

Published online by Cambridge University Press:  01 August 2014

John D.H. Doherty
John D.H. Doherty*
Affiliation:
Medical Service, Food and Agriculture Organization of the United Nations, Rome, Italy
*
Medical Service, Food and Agriculture Organization of the United Nations, Via delle Terme di Caracalla, 00100 Rome, Italy

Abstract

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The influence of maternal age and congenital malformations on perinatal mortality in twins in Australia from 1973 to 1980, is described. Stillbirths and neonatal deaths in twins fell with advancing maternal age. For teenage mothers, the twin perinatal mortality rate was 127.15/1,000. The sex ratio in twins is closer to unity than in singletons. Perinatal mortality due to malformation fell as maternal age increased up to 35 years. The role of zygosity and the distribution of birth weight with maternal age are discussed.

Keywords

TwinningPerinatal mortalityMaternal ageCongenital malformationAustraliaSexStillbirth

Information

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 37 , Issue 3-4 , October 1988 , pp. 321 - 329
Copyright
Copyright © The International Society for Twin Studies 1988

References

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