Ambient Temperature and Early Delivery of Singleton Pregnancies

doi:10.1289/EHP97

GSTDTAP > 资源环境科学

DOI	10.1289/EHP97
	Ambient Temperature and Early Delivery of Singleton Pregnancies
	Ha, Sandie 1; Liu, Danping 2; Zhu, Yeyi 1; Kim, Sung Soo 1; Sherman, Seth 3; Mendola, Pauline 1
	2017-03-01
发表期刊	ENVIRONMENTAL HEALTH PERSPECTIVES
ISSN	0091-6765
EISSN	1552-9924
出版年	2017
卷号	125 期号:3
文章类型	Article
语种	英语
国家	USA
英文摘要	BACKGROUND: Extreme temperature is associated with adverse birth outcomes but it is unclear whether it increases early delivery risk. OBJECTIVES: We aimed to determine the association between ambient temperature and early delivery. METHODS: Medical records from 223,375 singleton deliveries from 12 U.S. sites were linked to local ambient temperature. Exposure to hot (> 90th percentile) or cold (< 10th percentile) using site-specific and window-specific temperature distributions were defined for 3-months preconception, 7-week periods during the first two trimesters, 1 week preceding delivery, and whole pregnancy. Poisson regression with generalized estimating equations calculated the relative risk (RR) and 95% confidence interval for early deliveries associated with hot/cold exposures, adjusting for conception month, humidity, site, sex, maternal demographics, parity, insurance, prepregnancy body mass index, pregnancy complications, and smoking or drinking during pregnancy. Acute temperature associations were estimated separately for warm (May-September) and cold season (October-April) in a case-crossover analysis using conditional logistic regression. RESULTS: Compared with mild temperature (10-90th percentile), exposure to hot or cold during weeks 1-7 increased risk for early preterm (< 34 weeks) [RRhot: 1.11 (95% CI: 1.01, 1.21); RRcold: 1.20 (95% CI: 1.11, 1.30)], late preterm (34-36 weeks) [RRcold: 1.09 (95% CI: 1.04, 1.15)], and early term (37-38 weeks) [RRhot: 1.04 (95% CI: 1.02, 1.07); RRcold: 1.03 (95% CI: 1.00, 1.05)] delivery. Findings were similar for hot exposures during weeks 15-21. Examining deliveries at each week from 23 through 38, whole-pregnancy hot exposures increased delivery risk by 6-21% at weeks 34 and 36-38. In the case-crossover analysis, a 5 degrees F increase during the week preceding delivery was associated with 12-16% higher and 4-5% lower early delivery risk during warm and cold season, respectively. CONCLUSIONS: Both acute and chronic ambient temperature extremes may affect early delivery risk.
领域	资源环境
收录类别	SCI-E
WOS记录号	WOS:000395714400028
WOS关键词	PRETERM BIRTH ; ENVIRONMENTAL EXPOSURES ; EXTREME HEAT ; RISK ; OUTCOMES ; MORTALITY ; ASSOCIATION ; STRESS ; CHINA
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health ; Toxicology
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Toxicology
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/24189
专题	资源环境科学
作者单位	1.Eunice Kennedy Shriver Natl Inst Child Hlth & Hum, Epidemiol Branch, Div Intramural Populat Hlth Res, Rockville, MD USA; 2.Eunice Kennedy Shriver Natl Inst Child Hlth & Hum, Biostat & Bioinformat Branch, Div Intramural Populat Hlth Res, Rockville, MD USA; 3.Emmes Corp, Rockville, MD USA
推荐引用方式 GB/T 7714	Ha, Sandie,Liu, Danping,Zhu, Yeyi,et al. Ambient Temperature and Early Delivery of Singleton Pregnancies[J]. ENVIRONMENTAL HEALTH PERSPECTIVES,2017,125(3).
APA	Ha, Sandie,Liu, Danping,Zhu, Yeyi,Kim, Sung Soo,Sherman, Seth,&Mendola, Pauline.(2017).Ambient Temperature and Early Delivery of Singleton Pregnancies.ENVIRONMENTAL HEALTH PERSPECTIVES,125(3).
MLA	Ha, Sandie,et al."Ambient Temperature and Early Delivery of Singleton Pregnancies".ENVIRONMENTAL HEALTH PERSPECTIVES 125.3(2017).