&lt;p&gt;The Association Between Air Pollution and Low Birth Weight and Preterm Labor in Ahvaz, Iran&lt;/p&gt;

Sarizadeh, Reihaneh; Dastoorpoor, Maryam; Simbar, Masoumeh

doi:10.2147/ijwh.s227049

Cited by 22 publications

(8 citation statements)

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“…The choice of this one-week risk window is based on previous literature on air pollution and preterm birth. [32][33][34] We use the time-stratified control selection approach to sample control periods. 35 Specifically, for each case period, corresponding control periods are defined as all of the other days that fall on the same day of the week within the same month as the index or case date (Figure S1).…”

Section: Discussionmentioning

confidence: 99%

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Air pollution and preterm birth: A time‐stratified case‐crossover study in the San Joaquin Valley of California

Martinez

Chan‐Golston

2021

Paediatric Perinatal Epid

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Background Air pollution is linked to preterm birth (PTB), but existing studies are primarily focused on chronic exposures, conducted in areas with moderate pollution, and/or subject to confounding. Objectives We investigated short‐term associations between two pollutants [particulate matter <2.5 microns (PM2.5) and ozone] and PTB, and estimated excess PTB cases potentially attributed to these pollutants. Methods This time‐stratified case‐crossover study includes 196,970 singleton pregnancies affected by PTB and early term birth from the San Joaquin Valley (SJV), California, USA (2007–2015). Daily ozone and PM2.5 concentrations were estimated by the SJV Air Pollution Control District and geospatially linked to maternal zip code. We used conditional logistic regression models to estimate the odds ratio (OR) and 95% confidence intervals (CI) for the associations between an interquartile range (IQR) increase in pollutants and very preterm (VPTB, 20–34 weeks), moderate preterm (MPTB, 34–36 weeks) and early term births (ETB, 37–38 weeks). We adjusted all models for co‐pollutants and meteorological factors. Results During warm seasons (May‐October), an IQR increase in ozone was associated with 9–11% increased odds of VPTB from lag 0 (ORlag0 1.09, 95% CI 1.04,1.16) to lag 7 (ORlag7 1.11, 95% CI 1.04,1.16). Findings were consistent for MPTB and ETB. Ozone was potentially responsible for an excess of 3–6 VPTBs, 7–9 PTBs and 24–42 ETBs per 1,000 singleton deliveries. During cold seasons (November‐April), increased PM2.5 exposure was associated with 5–6% increased odds of VPTB beginning at lag 3 (ORlag3 1.06, 95% CI 1.02,1.11). PM2.5 was associated with an excess of 1–3 VPTBs, 0–3 MPTBs and 6–18 ETBs per 1,000 singleton deliveries. Conclusions PM2.5 and ozone are associated with increased risk of VPTB, MPTB and ETB within one week of exposure and are potential contributors to the increasing PTB trend. More research is needed to further understand the role of air pollution on PTB risk.

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Section: Discussionmentioning

confidence: 99%

“…For each delivery, the case period was defined as the day of delivery (lag 0) and each of the days during the week prior to the event (lags 1–7). The choice of this one‐week risk window is based on previous literature on air pollution and preterm birth 32‐34 35 .…”

Section: Methodsmentioning

confidence: 99%

Air pollution and preterm birth: A time‐stratified case‐crossover study in the San Joaquin Valley of California

Martinez

Chan‐Golston

2021

Paediatric Perinatal Epid

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“…Quantitively, 24 studies included, of which 11 studies assessed PTD and LBW [10,8,[11][12][13][14][15][16][17][18][19]. Five studies assessed LBW [6,[20][21][22][23] and eight studies assessed PTD [9,[24][25][26][27][28][29].…”

Section: Resultsmentioning

confidence: 99%

Air pollutants–particulate matter (PM)2.5 with antenatal exposure leading to adverse obstetrical outcomes of low birth weight and preterm birth: A systematic review and meta-analysis

Altangerel

Shih²,

Wang³

et al. 2023

International Surgery

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Introduction: PM 2.5 exposure impacts on prenatal health and birth outcomes including low birth weight and preterm delivery. Objective: To identify and explore PM 2.5 exposure on adverse obstetrical outcomes including preterm birth and low birth weight. Method: A total of 409 studies was identified by searching from PUBMED, EMBASE, SCOPUS, WEB OF SCIENCE, and SCIENCE DIRECT. Of the 409 articles from 1982 to 2020, 24 articles were identified qualitatively considered, and 7 articles were quantitively eligible included in this meta-analysis. The pooled effect of PM 2.5 exposure and LBW, PTD were calculated using a random effect model with significant heterogeneity.Totally, 7 studies conducted in meta-analysis, and the pooled effect of PM 2.5 exposure in LBW and entire pregnant were 1.033 (95%CI: 1.025, 1.041) with significant high heterogeneity (I 2 = 96.110, P=0.000). The pooled effect of PM 2.5 exposure PTD and entire pregnant were 1.024 (95%CI: 1.015, 1.033) with significant different low heterogeneity (I 2 = 60.036, P=0.082). Discussion: Although prenatal exposure of PM 2.5 during pregnancy is significantly associated with the risk of LBW, the risk of PTD is a significant differrent, but consistently associated with PM 2.5 . Conclusion: Globally, PM 2.5 exposure is significantly associated with serious outcomes of pregnancy and birth outcomes across the world. It appears in the prenatal health emerging risks that government is needed to influence the health policies to pursue on maternal and child health. Key words: “maternal”, “prenatal”, “air pollution”, “PM 2.5 ”, “Preterm Birth”, and ”Low Birth Weight.”

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“…We began with exploratory data analysis, including univariate plots, summary statistics, and correlation analysis. To account for nonlinear relationships, we applied generalized additive models (GAM), often used in air pollution research. ,, We generated our models with a forward selection process, beginning with traffic variables and individually adding meteorology covariates. We kept variables if they substantially improved the model fit and accuracy as determined by AIC and adjusted R .…”

Section: Materials and Methodsmentioning

confidence: 99%

Decreases in Near-Road NO and NO₂ Concentrations during the COVID-19 Pandemic in California

Liu

Lipsitt

Jerrett

et al. 2020

Environ. Sci. Technol. Lett.

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The COVID-19 pandemic and resulting shelter-in-place measures led to widespread adoption of remote work policies and temporary business closures or operation curtailments, disrupting typical commuting patterns. This study investigates how these sudden shifts in traffic patterns affected near-road NO and NO2 concentrations in California. We used (1) near-road air pollution data from the U.S. Environmental Protection Agency’s AirNow database, (2) passenger and heavy-duty traffic data from the Caltrans Performance Monitoring System, and (3) weather data from MesoWest between January 1 and April 30 during the years 2017–2020 to model NO and NO2 concentrations as functions of highway traffic and meteorology. We then simulated NO and NO2 under business-as-usual traffic conditions and compared modeled data to observed values. Weekday passenger traffic significantly declined in Northern and Southern California by 29% and 24%, respectively. As a result, Northern and Southern California near-road locations experienced statistically significant declines in NO concentrations of 35% and 32% and in NO2 concentrations of 15% and 29%, respectively, compared to modeled estimates. As a natural experiment, our findings demonstrate that reduced vehicle activity significantly improved air quality, contributing to the body of evidence linking shelter-in-place measures and cleaner air.

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<p>The Association Between Air Pollution and Low Birth Weight and Preterm Labor in Ahvaz, Iran</p>

Cited by 22 publications

References 87 publications

Air pollution and preterm birth: A time‐stratified case‐crossover study in the San Joaquin Valley of California

Air pollution and preterm birth: A time‐stratified case‐crossover study in the San Joaquin Valley of California

Air pollutants–particulate matter (PM)2.5 with antenatal exposure leading to adverse obstetrical outcomes of low birth weight and preterm birth: A systematic review and meta-analysis

Decreases in Near-Road NO and NO₂ Concentrations during the COVID-19 Pandemic in California

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<p>The Association Between Air Pollution and Low Birth Weight and Preterm Labor in Ahvaz, Iran</p>

Cited by 22 publications

References 87 publications

Air pollution and preterm birth: A time‐stratified case‐crossover study in the San Joaquin Valley of California

Air pollution and preterm birth: A time‐stratified case‐crossover study in the San Joaquin Valley of California

Air pollutants–particulate matter (PM)2.5 with antenatal exposure leading to adverse obstetrical outcomes of low birth weight and preterm birth: A systematic review and meta-analysis

Decreases in Near-Road NO and NO2 Concentrations during the COVID-19 Pandemic in California

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Product

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Decreases in Near-Road NO and NO₂ Concentrations during the COVID-19 Pandemic in California