NDLI: Maternal exposure to Wenchuan earthquake and prolonged risk of offspring birth outcomes: a natural experiment study

Content Provider	Springer Nature : BioMed Central
Author	Lian, Qiguo Ni, Jiaying Zhang, Jun Little, Julian Luo, Shan Zhang, Lin
Abstract	Background The prolonged effects of disasters on reproductive outcomes among the survivors are less studied, and the findings are inconsistent. We examined the associations of maternal exposure to the 2008 Wenchuan earthquake years before conception with adverse birth outcomes. Methods We included 73,493 women who delivered in 96 hospitals in 24 provinces and autonomous regions from the 2015/16 China Labor and Delivery Survey. We weighted the multivariable logistic models based on the combination of coarsened exact matching (CEM) weight and survey weight, and performed sex-stratified analysis to test whether associations of maternal earthquake exposure with adverse birth outcomes (Stillbirth, preterm birth [PTB], low birthweight [LBW], and small for gestational age [SGA]) varied by sex. Results The bivariate models showed that the weighted incidence of each adverse birth outcome was higher in exposed group than unexposed group: stillbirth (2.00% vs. 1.33%), PTB (14.14% vs. 7.32%), LBW (10.82% vs. 5.76%), and SGA (11.32% vs. 9.52%). The multivariable models showed maternal earthquake exposure was only associated significantly with a higher risk of PTB in offspring among all births (adjusted risk ratio [aRR](95%CI):1.25(1.06–1.48), P = 0.010). The sex-stratified analysis showed the association was significant among male births (aRR (95%CI): 1.40(1.12–1.75),P = 0.002),but unsignificant among female births. The sensitivity analysis reported similar findings. Conclusions The 2008 Wenchuan earthquake exposure has a long-term effect on PTB. Maternal acute exposure to disasters could be a major monitor for long-term reproductive outcomes. More attention should be paid to the underlining reasons for disaster-related adverse birth outcomes.
Related Links	https://bmcpregnancychildbirth.biomedcentral.com/counter/pdf/10.1186/s12884-020-03206-1.pdf
Ending Page	9
Page Count	9
Starting Page	1
File Format	HTM / HTML
ISSN	14712393
DOI	10.1186/s12884-020-03206-1
Journal	BMC Pregnancy and Childbirth
Issue Number	1
Volume Number	20
Language	English
Publisher	BioMed Central
Publisher Date	2020-09-22
Access Restriction	Open
Subject Keyword	Reproductive Medicine Maternal and Child Health Gynecology Wenchuan earthquake Adverse birth outcomes Preterm birth
Content Type	Text
Resource Type	Article
Subject	Obstetrics and Gynecology
Journal Impact Factor	2.8/2023
5-Year Journal Impact Factor	3.4/2023

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