Early-term birth and its association with universal two-child policy: a national cross-sectional study in China

Zhang, J, Williams, GJ ORCID: https://orcid.org/0000-0001-7689-1231, Wang, G, Chen, J, Zhang, M, Du, W ORCID: https://orcid.org/0000-0002-5115-7214, Zhu, J, Zhang, J and Hua, J, 2021. Early-term birth and its association with universal two-child policy: a national cross-sectional study in China. BMJ Open, 11 (12): e054959. ISSN 2044-6055

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Abstract

Objective: To describe the epidemiology of early-term birth (ETB) at the national level in China, and explore the association and mediating factors between ETB and policy between universal two-child policy and ETB, so as to explain the potential reason for such a relationship and provide evidence for future ETB interventions in the era of the new birth control policy.

Design: Cross-sectional study.

Participants: The cross-sectional study used data from China Labour and Delivery Survey between 2015 and 2016. A total of 75 132 survey data collected from 89 hospitals in 25 provinces were included in the analysis. We further explored the association between the universal two-child policy and ETB.

Results: The weighted incidence of ETB was 30.1 per 100 all births (95% CI 30.06% to 30.14%) or 29.88 per 100 live births (95% CI 29.97% to 30.05%) between 2015 and 2016 in China. There was an association between the universal two-child policy and ETB (relative risk, RR 1.19, 95% CI 1.15 to 1.23), which was not mediated by maternal age (RR 1.17, 95% CI 1.13 to 1.22), previous uterine scars (RR 1.18, 95% CI 1.14 to 1.22), parity (RR 1.19, 95% CI 1.15 to 1.24) and other measured conditions (each p

Item Type:	Journal article
Publication Title:	BMJ Open
Creators:	Zhang, J., Williams, G.J., Wang, G., Chen, J., Zhang, M., Du, W., Zhu, J., Zhang, J. and Hua, J.
Publisher:	BMJ
Date:	December 2021
Volume:	11
Number:	12
ISSN:	2044-6055
Identifiers:	Number Type 10.1136/bmjopen-2021-054959 DOI 1503029 Other
Rights:	© author(s) (or their employer(s)) 2021. This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.
Divisions:	Schools > School of Social Sciences
Record created by:	Jonathan Gallacher
Date Added:	14 Dec 2021 09:54
Last Modified:	14 Dec 2021 09:54
URI:	https://irep.ntu.ac.uk/id/eprint/45120

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