SEARCHCASE-CONTROLobstetrics and gynecology, epidemiology

case-control·obstetrics and gynecology, epidemiology, public health, pediatrics·PMC10422195

Association of Daytime-Only, Nighttime-Only, and Compound Heat Waves With Preterm Birth by Urban-Rural Area and Regional Socioeconomic Status in China

JAMA Network Open · 11 authors, 7 centres

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It investigated associations between preterm birth and exposure to three types of heat waves (daytime-only, nighttime-only, compound) defined by temperature thresholds (75th or 90th percentile) and durations (2, 3, or 4 consecutive days) in the week before delivery. The study found significant associations for compound heat waves (adjusted odds ratios [AORs] from 1.02 to 1.04) and daytime-only heat waves (AORs from 1.03 to 1.04), but not for nighttime-only heat waves. The risk from daytime-only heat waves was higher in rural areas (AOR up to 1.09) than in urban areas (AOR up to 1.01). The findings suggest targeted public health measures may help reduce heat-related preterm birth.

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case-control

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obstetrics and gynecology

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ORIGINAL PAPER

PMC10422195

Association of Daytime-Only, Nighttime-Only, and Compound Heat Waves With Preterm Birth by Urban-Rural Area and Regional Socioeconomic Status in China

JAMA Network Open

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ABSTRACT

Key Points Question Is exposure to daytime-only, nighttime-only, and compound heat waves associated with preterm birth among Chinese women with singleton pregnancies, and does the association vary across urban-rural and socioeconomic regions? Findings This case-crossover study linked nationwide data representing 5 446 088 singleton pregnancies in the warm season from 2012 to 2019. Exposure to compound and daytime-only heat waves was associated with preterm birth, particularly for rural mothers exposed to daytime-only heat waves. Meaning These findings suggest that protecting pregnant women from compound and daytime-only heat waves may improve heat-related preterm birth in China through targeted measures.

CITATION EXPORT

Yafei Guo, Peiran Chen, Yanxia Xie et al.. Association of Daytime-Only, Nighttime-Only, and Compound Heat Waves With Preterm Birth by Urban-Rural Area and Regional Socioeconomic Status in China. JAMA Network Open. (2023). https://doi.org/10.1001/jamanetworkopen.2023.26987

AUTHORS

11 · 7 CENTRES

Yafei Guo, Peiran Chen, Yanxia Xie, Yanping Wang, Yi Mu, Ruobing Zhou, Yanlin Niu, Xiaoming Shi, Jun Zhu, Juan Liang, Qiyong Liu

1National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
2Chinese Center for Disease Control and Prevention Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
3National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, China
4Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
5Department of Health, Ethics and Society, Maastricht University, Maastricht, the Netherlands
6Institute for Nutrition and Food Hygiene, Beijing Center for Disease Prevention and Control, Beijing, China
7Chinese Center for Disease Control and Prevention, Beijing, China