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- Title
Gestational age, morbidity and mortality among twin births in New South Wales, Australia 2003–2014: A cohort study.
- Authors
Ibiebele, Ibinabo; Humphries, Jacob B.; Torvaldsen, Siranda; Ford, Jane B.; Morris, Jonathan M.; Bowen, Jennifer R.; Randall, Deborah A.
- Abstract
Background: Evidence suggests that the trend toward early planned births observed among singletons may be evident among twin pregnancies. Aims: To describe trends in gestational age at birth, pregnancy characteristics, neonatal morbidity and mortality among twin pregnancies. Materials and Methods: Population‐based data linkage study of twin births of ≥30 weeks of gestation without a major congenital anomaly born in 2003–2014 in New South Wales (NSW), Australia. Linked pregnancy and birth, hospital and mortality data were used. Generalised linear regression was used to assess linear trends. Risk difference (RD) and 95% confidence intervals were estimated. Results: Among 28 076 eligible twin births (14 038 pregnancies), 49% of births occurred prior to 37 weeks and 69% of births were planned (pre‐labour caesarean or induction of labour). There were increases over time in the proportion of twin births at preterm gestations (30–34 weeks (RD 2.1, 95% CI 0.1, 4.0), 35–36 weeks (RD 7.5, 95% CI 5.4, 9.7)) and in the rates of planned births (pre‐labour caesarean (RD 6.4, 95% CI 4.0, 8.8), induction (RD 4.6, 95% CI 2.6, 6.6)). There was no significant change in stillbirth or neonatal death rates, but there was an increase in neonatal morbidity over the study period. Concurrently, there were increases in the prevalence of gestational diabetes; and decreases in pregnancy hypertension, assisted reproductive technology use, small‐for‐gestational age and birthweight discordance. Conclusions: Gestational age at birth among twin births is decreasing and birth intervention is increasing. There are increasing rates of neonatal morbidity, but no overall change in perinatal mortality.
- Subjects
NEW South Wales; CESAREAN section; CONFIDENCE intervals; GESTATIONAL diabetes; DISEASES; GESTATIONAL age; PREMATURE infants; LONGITUDINAL method; EVALUATION of medical care; MULTIPLE pregnancy; PERINATAL death; PREGNANCY; REGRESSION analysis; DATA analysis software; DESCRIPTIVE statistics; CHILDREN
- Publication
Australian & New Zealand Journal of Obstetrics & Gynaecology, 2020, Vol 60, Issue 4, p541
- ISSN
0004-8666
- Publication type
Article
- DOI
10.1111/ajo.13101