2019
DOI: 10.1016/j.envint.2019.02.023
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Ambient temperature and preterm birth: A retrospective study of 32 million US singleton births

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Cited by 105 publications
(92 citation statements)
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References 41 publications
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“…Some previous studies have suggested that exposure to heatwaves in the week prior to the delivery date can trigger PTB (Kent et al 2014;Sun et al 2019;Wang et al 2013). Because it is not clear that earlier exposures could directly trigger labor via thermoregulatory mechanisms (Auger et al 2014), we restricted the exposure window to the final gestational week and so included only births that occurred during the warm season N = 249,489).…”
Section: Populationmentioning
confidence: 99%
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“…Some previous studies have suggested that exposure to heatwaves in the week prior to the delivery date can trigger PTB (Kent et al 2014;Sun et al 2019;Wang et al 2013). Because it is not clear that earlier exposures could directly trigger labor via thermoregulatory mechanisms (Auger et al 2014), we restricted the exposure window to the final gestational week and so included only births that occurred during the warm season N = 249,489).…”
Section: Populationmentioning
confidence: 99%
“…An increasing number of epidemiological studies have reported that high-temperature exposure during very late gestation was associated with PTB (Basu et al 2010;Ha et al 2018;Schifano et al 2013;Vicedo-Cabrera et al 2015). Furthermore, some other studies have showed prolonged periods of hightemperature exposure, which was usually defined as a heatwave event, can significantly heighten the risk (Kent et al 2014;Sun et al 2019;Wang et al 2013). In the context of climate change, the frequency and intensity of heatwaves are expected to increase (Hoegh-Guldberg et al 2018;Schär 2016), which will accordingly add to the existing global PTB burden.…”
Section: Introductionmentioning
confidence: 99%
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“…The strong association between short-term temperature exposure and PTB in Detroit, Michigan, USA was consistent with several other studies’ observed associations between PTB or diminished gestational age and temperature exposures within the week prior to delivery at regionally high temperatures. Regions in which these associations have been found include Central Australia (8.3% at 40°C daily maximum temperature),11 Northern California, USA (11.6% increase for a 5.6°C increase in weekly average AT in the warm season),34 Alabama, USA (32.4% increase with two consecutive days of daily mean temperatures above the 98 th percentile),39 Barcelona, Spain (5-day reduction in average gestational age with heat index above the 99 th percentile),8 Rome, Italy (1.9% increase per 1°C increase in maximum AT in the prior 2 days and 19% increase during heat waves),40 Brisbane, Australia (13% to 100% increase during heat waves), in an aggregated sample of 12 US cities (12% to 16% increase with 2.8°C increase in prior week),12 in Southern China (7% increase with previous-week temperatures above 95 th percentile)10 and in a multi-city USA sample (2% increased PTB risk with extreme heat in the prior 4 days) 41…”
Section: Discussionmentioning
confidence: 99%
“…Further, climate affects birth outcomes; in a study including 32 million US singletons [36], extremely high temperature was associated with preterm birth, which has a strong correlation with LBW. In the Japanese setting, urbanization has caused long-term climate changes related to a rise in temperature [37].…”
Section: Discussionmentioning
confidence: 99%