Evidence map›Paper›PMID 25522338›Full record

ArticleEnvironmental health perspectives2015

Autism spectrum disorder and particulate matter air pollution before, during, and after pregnancy: a nested case-control analysis within the Nurses' Health Study II Cohort.

Raanan Raz, Andrea L Roberts, Kristen Lyall, Jaime E Hart, Allan C Just, Francine Laden, Marc G Weisskopf

Abstract read
In one paragraph

Article in Environmental health perspectives, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 166 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
166citing papers in PubMed, 7 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

166 citing papers in PubMed, 7 syntheses or guidelines pooled it.

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  19. Prenatal Exposure to Wildfire and Autism in Children.Environmental science & technology · 2026
    Article
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106 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Raanan RazDepartment of Environmental Health, Department of Social and Behavioral Sciences, and Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.
Andrea L Roberts
Kristen Lyall
Jaime E Hart
Allan C Just
Francine Laden
Marc G Weisskopf

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SUSAN A KORRICK · 1985 to 2026
$44.6M
Life Course Cancer Epidemiology Cohort in WomenUM1CA176726 · NCI · HARVARD SCHOOL OF PUBLIC HEALTH · PI WILLETT, WALTER C. · 2013 to 2017
$15.7M
DIET, PHYSICAL ACTIVITY, AND THE RELATIONSHIP BETWEEN AIR POLLUTION AND CVDR01ES017017 · NIEHS · BRIGHAM AND WOMEN'S HOSPITAL · PI LADEN, FRANCINE · 2009 to 2012
$1.7M
NCI NIH HHS UM1 CA176726NCI NIH HHS UM1 CA176726NIEHS NIH HHS P30 ES000002NIEHS NIH HHS R01 ES017017
6 · The paper itself

Abstract

backgroundAutism spectrum disorder (ASD) is a developmental disorder with increasing prevalence worldwide, yet has unclear etiology.

objectiveWe explored the association between maternal exposure to particulate matter (PM) air pollution and odds of ASD in her child.

methodsWe conducted a nested case-control study of participants in the Nurses' Health Study II (NHS II), a prospective cohort of 116,430 U.S. female nurses recruited in 1989, followed by biennial mailed questionnaires. Subjects were NHS II participants' children born 1990-2002 with ASD (n = 245), and children without ASD (n = 1,522) randomly selected using frequency matching for birth years. Diagnosis of ASD was based on maternal report, which was validated against the Autism Diagnostic Interview-Revised in a subset. Monthly averages of PM with diameters ≤ 2.5 μm (PM2.5) and 2.5-10 μm (PM10-2.5) were predicted from a spatiotemporal model for the continental United States and linked to residential addresses.

resultsPM2.5 exposure during pregnancy was associated with increased odds of ASD, with an adjusted odds ratio (OR) for ASD per interquartile range (IQR) higher PM2.5 (4.42 μg/m3) of 1.57 (95% CI: 1.22, 2.03) among women with the same address before and after pregnancy (160 cases, 986 controls). Associations with PM2.5 exposure 9 months before or after the pregnancy were weaker in independent models and null when all three time periods were included, whereas the association with the 9 months of pregnancy remained (OR = 1.63; 95% CI: 1.08, 2.47). The association between ASD and PM2.5 was stronger for exposure during the third trimester (OR = 1.42 per IQR increase in PM2.5; 95% CI: 1.09, 1.86) than during the first two trimesters (ORs = 1.06 and 1.00) when mutually adjusted. There was little association between PM10-2.5 and ASD.

conclusionsHigher maternal exposure to PM2.5 during pregnancy, particularly the third trimester, was associated with greater odds of a child having ASD.

Indexed as

AdultAir PollutantsAir PollutionCase-Control StudiesChildChild Development Disorders, PervasiveChild, PreschoolEnvironmental MonitoringFemaleHumansMaleMaternal ExposureParticulate MatterPregnancyPrenatal Exposure Delayed EffectsProspective StudiesAir PollutantsParticulate Matter

Identifiers

PMID25522338
PMCPMC4348742

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.