Effect of ambient temperature and air pollutants on the risk of preterm birth, Rome 2001–2010

Schifano, Patrizia; Lallo, Adele; Asta, Federica; Sario, Manuela De; Davoli, Marina; Michelozzi, Paola

doi:10.1016/j.envint.2013.09.005

Cited by 145 publications

(162 citation statements)

References 37 publications

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“…This is consistent with results from the Chinese study, which found that extreme heat was more strongly associated with preterm births during 20–31 and 32–34 weeks of gestation than with preterm birth during weeks 35–36 16. Other studies, however, have reported smaller or even negative estimates for low gestational ages 14 15 33. Our study suggests that high temperatures may also trigger labour among term births, and the observation of a smaller but significant heat effect for term births compared with preterm births is consistent with previous studies 14 33.…”

Section: Discussionsupporting

confidence: 91%

“…In warmer climates, effects of heat on preterm birth have been reported for Negev (Israel), California, Barcelona, Brisbane, Rome, Valencia and China,14–16 27 32–35 but not for New York and Chicago 36 37. On the basis of warm season data, Basu et al 33 found an 8.6% (95% CI 6.0% to 11.3%) increase in preterm birth risk for a 5.6°C increase in mean apparent temperature the week before delivery in California, whereas Schifano et al 15 reported an increase of 1.87% (95% CI 0.86% to 2.87%) for a 1°C increase in maximum apparent temperature (lag 0–2) in Rome. Different results for minimum and maximum temperature were reported for the warm season in Valencia:27 compared with the median temperature, the risk of preterm birth increased up to 20% when maximum apparent temperature exceeded the 90th centile 2 days before delivery, and by 5% when minimum temperature rose to the 90th centile during the 4th–6th day before delivery.…”

Section: Discussionmentioning

confidence: 98%

“…Maternal underweight increases the risk of spontaneous preterm birth, whereas maternal obesity is more closely linked to elective preterm delivery through obesity-related disorders such as pre-eclampsia and diabetes 1 50. Schifano et al 15 found that mothers with an obstetric pathology, eclampsia or a chronic condition during pregnancy were less vulnerable to the effect of heat on preterm birth, which might be explained by greater medical attention received during pregnancy by these groups of women. On the other hand, hospitalisation for chronic diseases during the 2 years preceding the delivery (with cardiac disease accounting for 60% of the cases) was found to confer a greater susceptibility to temperature 15.…”

Section: Discussionmentioning

confidence: 99%

“…Schifano et al 15 found that mothers with an obstetric pathology, eclampsia or a chronic condition during pregnancy were less vulnerable to the effect of heat on preterm birth, which might be explained by greater medical attention received during pregnancy by these groups of women. On the other hand, hospitalisation for chronic diseases during the 2 years preceding the delivery (with cardiac disease accounting for 60% of the cases) was found to confer a greater susceptibility to temperature 15. By excluding induced deliveries and caesarean sections from our study population, we limited the potential influence of pregnancy complications on our study findings.…”

Section: Discussionmentioning

confidence: 99%

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Ambient temperature as a trigger of preterm delivery in a temperate climate

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Ambient temperature as a trigger of preterm delivery in a temperate climate

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et al. 2016

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“…Measurements were similar to the results obtained in the literature (Guibot, 1987). In fact, temperature is an essential parameter to control surface trade intensity and sea-air circumstances in marine science (Šolić et al, 1999;Chevaldonne and Lejeusney, 2003;Schifano et al, 2013).…”

Section: Central Coast Of Oranmentioning

confidence: 99%

Impact of urban and industrial effluents on the coastal marine environment in Oran, Algeria

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et al. 2015

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

et al. 2023

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ImportanceAssociations between heat waves and preterm birth (PTB) have been reported. However, associations of daytime-only, nighttime-only, and compound heat waves with PTB have yet to be explored at a national level. Furthermore, possible heterogeneity across urban-rural communities with different socioeconomic statuses needs to be explored.ObjectiveTo examine the association between daytime-only, nighttime-only, and compound heat waves and PTB in China and to find variations between urban and rural regions.Design, Setting, and ParticipantsThis case-crossover study used nationwide representative birth data between January 1, 2012, and December 31, 2019, from China’s National Maternal Near Miss Surveillance System. This multisite study covered 30 provinces in China and ensured the representation of urban and rural populations across 3 socioeconomic regions. Singleton live births delivered in the warm seasons from April to October during the study period were included. Exclusion criteria consisted of gestational age younger than 20 or older than 45 weeks, maternal ages younger than 13 or older than 50 years, conception dates earlier than 20 weeks before January 1, 2012, and later than 45 weeks before December 31, 2019, and an inconsistent combination of birthweight and gestational age according to growth standard curves of Chinese newborns. Data were analyzed from September 10, 2021, to April 25, 2023.ExposuresEighteen definitions of heat waves by 3 distinct types, including daytime only (only daily maximum temperature exceeds thresholds), nighttime only (only daily minimum temperature exceeds thresholds), and compound (both daily maximum and minimum temperature exceeds thresholds) heat waves, and 6 indexes, including 75th percentile of daily temperature thresholds for 2 or more (75th-D2), 3 or more (75th-D3), or 4 or more (75th-D4) consecutive days and 90th percentile of daily temperature thresholds for 2 or more (90th-D2), 3 or more (90th-D3), and 4 or more (90th-D4) consecutive days.Main Outcomes and MeasuresPreterm births with less than 37 completed weeks of gestation.ResultsAmong the 5 446 088 singleton births in the final analytic sample (maternal mean [SD] age, 28.8 [4.8] years), 310 384 were PTBs (maternal mean [SD] age, 29.5 [5.5] years). Compared with unexposed women, exposure of pregnant women to compound heat waves in the last week before delivery was associated with higher risk for PTB, with the adjusted odds ratios (AORs) ranging from 1.02 (95% CI, 1.00-1.03) to 1.04 (95% CI, 1.01-1.07) in 6 indexes. For daytime-only heat wave exposures, AORs ranged from 1.03 (95% CI, 1.01-1.05) to 1.04 (95% CI, 1.01-1.08) in the 75th-D4, 90th-D2, 90th-D3, and 90th-D4 indexes. Such associations varied by rural (AOR range, 1.05 [95% CI, 1.01-1.09] to 1.09 [95% CI, 1.04-1.14]) and urban (AOR range, 1.00 [95% CI, 0.98-1.02] to 1.01 [95% CI, 0.99-1.04]) regions during exposure to daytime-only heat waves in the 75th-D3 and 90th-D3 indexes.Conclusions and RelevanceIn this case-crossover study, exposure to compound and daytime-only heat waves in the last week before delivery were associated with PTB, particularly for pregnant women in rural regions exposed to daytime-only heat waves. These findings suggest that tailored urban-rural preventive measures may improve maternal health in the context of climate change.

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Effect of ambient temperature and air pollutants on the risk of preterm birth, Rome 2001–2010

Cited by 145 publications

References 37 publications

Ambient temperature as a trigger of preterm delivery in a temperate climate

Ambient temperature as a trigger of preterm delivery in a temperate climate

Impact of urban and industrial effluents on the coastal marine environment in Oran, Algeria

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

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