SynthesisBMC pregnancy and childbirth2015
The association between fine particulate matter exposure during pregnancy and preterm birth: a meta-analysis.
Synthesis in BMC pregnancy and childbirth, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 9 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
49 citing papers in PubMed, 9 syntheses or guidelines pooled it.
- Association between atmospheric particulate matter pollution during pregnancy and premature birth in China: a meta-analysis.Frontiers in public health · 2025Pooled it
- Exposure to ambient air pollutions and its association with adverse birth outcomes: a systematic review and meta-analysis of epidemiological studies.Frontiers in public health · 2024Pooled it
- Risk factors for preterm birth: an umbrella review of meta-analyses of observational studies.BMC medicine · 2023Pooled it
- Relationship Between Outdoor Air Pollutant Exposure and Premature Delivery in China- Systematic Review and Meta-Analysis.International journal of public health · 2023Pooled it
- Ambient and household PM2.5 pollution and adverse perinatal outcomes: A meta-regression and analysis of attributable global burden for 204 countries and territories.PLoS medicine · 2021Pooled it
- The associations of air pollution exposure during pregnancy with fetal growth and anthropometric measurements at birth: a systematic review and meta-analysis.Environmental science and pollution research international · 2019Pooled it
- Maternal fine particulate matter (PMEnvironmental science and pollution research international · 2019Pooled it
- Different exposure levels of fine particulate matter and preterm birth: a meta-analysis based on cohort studies.Environmental science and pollution research international · 2017Pooled it
- Ambient air pollution and adverse birth outcomes: a systematic review and meta-analysis.Journal of Zhejiang University. Science. BPooled it
- Planetary health in practice: A scoping review of education and training for nurses and midwives.International journal of nursing studies advances · 2026Review
- Association between ambient PMFrontiers in public health · 2026Article
- Association of Maternal PMToxics · 2025Article
- Associations between satellite-derived estimates of PM2.5 species concentrations for organic carbon, elemental carbon, nitrate, and sulfate with birth weight and preterm birth in California during 2005-2014.Journal of exposure science & environmental epidemiology · 2025Article
- Impact of climate change and environmental adversities on maternal and fetal health: the role of clinical practices and providers in mitigating effects and prioritising women's health in the UK.Frontiers in global women's health · 2025Review
- IMPACT OF REAL-LIFE ENVIRONMENTAL EXPOSURES ON REPRODUCTION: Evidence for reproductive health effects following exposure to hydraulic fracturing chemical mixtures.Reproduction (Cambridge, England) · 2024Review
- Systems for rating bodies of evidence used in systematic reviews of air pollution exposure and reproductive and children's health: a methodological survey.Environmental health : a global access science source · 2024Review
- Air Quality and Health Impacts of Onshore Oil and Gas Flaring and Venting Activities Estimated Using Refined Satellite-Based Emissions.GeoHealth · 2024Article
- The effect of exposure to traffic related air pollutants in pregnancy on birth anthropometry: a cohort study in a heavily polluted low-middle income country.Environmental health : a global access science source · 2023Article
- Air Pollution and Birth Outcomes: Health Impact and Economic Value Assessment in Spain.International journal of environmental research and public health · 2023Article
- Acute air pollution and temperature exposure as independent and joint triggers of spontaneous preterm birth in New South Wales, Australia: a time-to-event analysis.Frontiers in public health · 2023Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAlthough several previous studies have assessed the association of fine particulate matter (PM2.5) exposure during pregnancy with preterm birth, the results have been inconsistent and remain controversial. This meta-analysis aims to quantitatively summarize the association between maternal PM2.5 exposure and preterm birth and to further explore the sources of heterogeneity in findings on this association.
methodsWe searched for all studies published before December 2014 on the association between PM2.5 exposure during pregnancy and preterm birth in the MEDLINE, PUBMED and Embase databases as well as the China Biological Medicine and Wanfang databases. A pooled OR for preterm birth in association with each 10 μg/m(3) increase in PM2.5 exposure was calculated by a random-effects model (for studies with significant heterogeneity) or a fixed-effects model (for studies without significant heterogeneity).
resultsA total of 18 studies were included in this analysis. The pooled OR for PM2.5 exposure (per 10 μg/m(3) increment) during the entire pregnancy on preterm birth was 1.13 (95% CI = 1.03-1.24) in 13 studies with a significant heterogeneity (Q = 80.51, p < 0.001). The pooled ORs of PM2.5 exposure in the first, second and third trimester were 1.08 (95% CI = 0.92-1.26), 1.09 (95% CI = 0.82-1.44) and 1.08 (95% CI = 0.99-1.17), respectively. The corresponding meta-estimates of PM2.5 effects in studies assessing PM2.5 exposure at individual, semi-individual and regional level were 1.11 (95% CI = 0.89-1.37), 1.14 (95% CI = 0.97-1.35) and 1.07 (95% CI = 0.94-1.23). In addition, significant meta-estimates of PM2.5 exposures were found in retrospective studies (OR = 1.10, 95% CI = 1.01-1.21), prospective studies (OR = 1.42, 95% CI = 1.08-1.85), and studies conducted in the USA (OR = 1.16, 95 % CI = 1.05-1.29).
conclusionsMaternal PM2.5 exposure during pregnancy may increase the risk of preterm birth,but significant heterogeneity was found between studies. Exposure assessment methods, study designs and study settings might be important sources of heterogeneity, and should be taken into account in future meta-analyses.
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