2021
DOI: 10.1016/j.envres.2021.111654
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Maternal air pollution exposure increases the risk of preterm birth: Evidence from the meta-analysis of cohort studies

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Cited by 38 publications
(20 citation statements)
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“…Environmental changes according to the month such as air pollution, ambient temperature, the synthesis of vitamin D from sunlight could affect the adverse birth outcomes. Recently, existing literature reports the positive association of adverse birth outcomes with maternal exposure to PM during specific trimester or entire pregnancy 21 , 22 . A meta-analysis study reported that PM 10 was found to increase extremely preterm birth 21 , and in particular, the incidence of preterm birth increased in Asia with high concentration of air pollution 22 .…”
Section: Discussionmentioning
confidence: 99%
“…Environmental changes according to the month such as air pollution, ambient temperature, the synthesis of vitamin D from sunlight could affect the adverse birth outcomes. Recently, existing literature reports the positive association of adverse birth outcomes with maternal exposure to PM during specific trimester or entire pregnancy 21 , 22 . A meta-analysis study reported that PM 10 was found to increase extremely preterm birth 21 , and in particular, the incidence of preterm birth increased in Asia with high concentration of air pollution 22 .…”
Section: Discussionmentioning
confidence: 99%
“…The studies included were cohort studies on the association between preterm birth and PM 2.5 that were selected in a recent systematic review and meta-analysis (SRMA) [ 8 ]. This SRMA was selected because it was the most recent (included peer-reviewed English-language articles published to October 2020) and employed restrictions to promote quality and minimise heterogeneity in design.…”
Section: Methodsmentioning
confidence: 99%
“…There were 31 primary studies, all of which were cohort studies with Newcastle–Ottawa quality Scale scores ≥ 7. The need for the SRMA was conducted based on the premise that “preterm birth has been shown to be associated with prenatal air pollution exposure, but the results are still inconsistent” [ 8 ]. The authors of the SRMA reported that the pooled relative risk (RR) of preterm birth was 1.07 (95% CI, 1.05, 1.10) per 10 μg/m 3 increase in whole-pregnancy exposure to PM 2.5 .…”
Section: Methodsmentioning
confidence: 99%
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“…Risk factors for preterm birth include advanced maternal age 29 , greater maternal body mass index 30 , 31 , substance use during pregnancy (tobacco or alcohol use) 32 , 33 , exposure to violence (physical or emotional) 34 36 , and psychosocial stress 37 , 38 . In addition, clinical and obstetrical characteristics, such as a history of previous preterm birth 39 41 , gestational diabetes and chronic hypertension 42 , short inter-pregnancy interval 43 , 44 , infection and inflammation 45 50 , genetic factors 51 54 , and environmental pollutants 55 59 , have also been linked to an increased risk of preterm birth. Race/ethnicity-related disparities in preterm birth rates were also reported 60 62 .…”
Section: Introductionmentioning
confidence: 99%