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Perinatal mortality in twins, Australia, 1973-1980: I.
1Medical Service, Food and Agriculture Organization of the United Nations, Rome, Italy.
Acta Geneticae Medicae Et Gemellologiae
|January 1, 1988
Summary
Perinatal mortality in Australian twins (1973-1980) declined slower than singletons, with stillbirths rising due to antepartum deaths. Twins faced a five-fold higher risk of perinatal death compared to singletons.
Area of Science:
- Obstetrics and Gynecology
- Perinatology
- Reproductive Health
Background:
- Twin births present unique challenges in perinatal care.
- Monitoring perinatal outcomes is crucial for identifying trends and improving infant survival rates.
Purpose of the Study:
- To analyze the perinatal outcomes of twin births in Australia between 1973 and 1980.
- To compare the trends in perinatal mortality between twins and singletons during this period.
Main Methods:
- Retrospective analysis of Australian perinatal data from 1973 to 1980.
- Calculation of perinatal mortality rates and stillbirth rates for twin and singleton births.
- Comparison of mortality trends and relative risk between the two groups.
Main Results:
- The perinatal mortality rate for twins was 82.85 per 1,000 births, compared to 16.49 per 1,000 for singletons, a relative risk of 5.0.
- Perinatal mortality declined more slowly in twins than singletons.
- The stillbirth rate increased in twins, attributed to a rise in antepartum deaths, potentially linked to an increasing proportion of monozygotic twins.
Conclusions:
- Twin births in Australia during 1973-1980 experienced significantly higher perinatal mortality than singletons.
- The observed trends suggest potential contributing factors such as increased antepartum deaths and a higher rate of monozygotic twinning.
- Further research into the specific causes of antepartum deaths in twins is warranted to improve perinatal outcomes.