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BMC Pregnancy and Childbirth

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Open Access 01-12-2021 | Premature Birth | Research

Gestational age as a predictor for subsequent preterm birth in New South Wales, Australia

Authors: Gavin Pereira, Annette K. Regan, Kingsley Wong, Gizachew A. Tessema

Published in: BMC Pregnancy and Childbirth | Issue 1/2021

Abstract

Background

There is no validated evidence base on predictive ability and absolute risk of preterm birth by gestational age of the previous pregnancy.

Methods

We conducted a retrospective cohort study of mothers who gave birth to their first two children in New South Wales, 1994–2016 (N = 517,558 mothers). For each week of final gestational age of the first birth, we calculated relative and absolute risks of subsequent preterm birth.

Results

For mothers whose first birth had a gestational age of 22 to 30 weeks the absolute risks of clinically significant preterm second birth (before 28, 32, and 34 weeks) were all less than 14%. For all gestational ages of the first child the median gestational ages of the second child were all at least 38 weeks. Sensitivity and positive predictive values were all below 30%.

Conclusion

Previous gestational age alone is a poor predictor of subsequent risk of preterm birth.

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Title: Gestational age as a predictor for subsequent preterm birth in New South Wales, Australia
Authors: Gavin Pereira
Annette K. Regan
Kingsley Wong
Gizachew A. Tessema
Publication date: 01-12-2021
Publisher: BioMed Central
Keyword: Premature Birth
Published in: BMC Pregnancy and Childbirth / Issue 1/2021
Electronic ISSN: 1471-2393
DOI: https://doi.org/10.1186/s12884-021-04084-x

2024 ASCO Annual Meeting

Springer Medicine

Gestational age as a predictor for subsequent preterm birth in New South Wales, Australia

Abstract

Background

Methods

Results

Conclusion

2024 ASCO Annual Meeting

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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