Evidence map›Paper›PMID 18470315›Full record

ArticleEnvironmental health perspectives2008

A cohort study of traffic-related air pollution impacts on birth outcomes.

Michael Brauer, Cornel Lencar, Lillian Tamburic, Mieke Koehoorn, Paul Demers, Catherine Karr

Erratum issued Registry-linked trialOpen access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT02786420 (Imaging Innovations for Placental Assessment in Response to Environmental Pollution), which is not on this map. Cited by 231 papers, 11 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
231citing papers in PubMed, 11 pooled it
22.7field-weighted citation impact, top 1% of its field
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.

NCT02786420 completednot on this mapstarted 2015, after this paper: background citation

Imaging Innovations for Placental Assessment in Response to Environmental Pollution

TypeobservationalSponsorUniversity of California, Los AngelesRan2015 to 2020Enrolled199ConditionsPlacental Disease
3 · Its place in the literature

Who cites it

231 citing papers in PubMed, 11 syntheses or guidelines pooled it, 620 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Maternal fine particulate matter (PMEnvironmental science and pollution research international · 2019
    Pooled it
  5. Air pollution and female fertility: a systematic review of literature.Reproductive biology and endocrinology : RB&E · 2018
    Pooled it
  6. Pooled it
  7. Pooled it
  8. Pooled it
  9. Pooled it
  10. Maternal exposure to fine particulate matter (PM2.5) and pregnancy outcomes: a meta-analysis.Environmental science and pollution research international · 2015
    Pooled it
  11. A review and meta-analysis of outdoor air pollution and risk of childhood leukemia.Journal of environmental science and health. Part C, Environmental carcinogenesis & ecotoxicology reviews · 2015
    Pooled it
  12. Observational
  13. Long-Term PMLife (Basel, Switzerland) · 2025
    Review
  14. Article
  15. Investigating inequalities in NOInternational journal for equity in health · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

171 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Michael BrauerSchool of Environmental Health, The University of British Columbia, 2206 East Mall, Vancouver BC V6T1Z3 Canada. brauer@interchange.ubc.ca
Cornel Lencar
Lillian Tamburic
Mieke Koehoorn
Paul Demers
Catherine Karr
University of British Columbia · CAUniversity of Washington · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEvidence suggests that air pollution exposure adversely affects pregnancy outcomes. Few studies have examined individual-level intraurban exposure contrasts.

objectivesWe evaluated the impacts of air pollution on small for gestational age (SGA) birth weight, low full-term birth weight (LBW), and preterm birth using spatiotemporal exposure metrics.

methodsWith linked administrative data, we identified 70,249 singleton births (1999-2002) with complete covariate data (sex, ethnicity, parity, birth month and year, income, education) and maternal residential history in Vancouver, British Columbia, Canada. We estimated residential exposures by month of pregnancy using nearest and inverse-distance weighting (IDW) of study area monitors [carbon monoxide, nitrogen dioxide, nitric oxide, ozone, sulfur dioxide, and particulate matter < 2.5 (PM2.5) or < 10 (PM10) microm in aerodynamic diameter], temporally adjusted land use regression (LUR) models (NO, NO2, PM2.5, black carbon), and proximity to major roads. Using logistic regression, we estimated the risk of mean (entire pregnancy, first and last month of pregnancy, first and last 3 months) air pollution concentrations on SGA (< 10th percentile), term LBW (< 2,500 g), and preterm birth.

resultsResidence within 50 m of highways was associated with a 22% (95% CI, 0.81-1.87) [corrected] increase in LBW. Exposure to all air pollutants except O3 was associated with SGA, with similar odds ratios (ORs) for LUR and monitoring estimates (e.g., LUR: OR = 1.02; 95% CI, 1.00-1.04; IDW: OR = 1.05; 95% CI, 1.03-1.08 per 10-microg/m3 increase in NO). For preterm births, associations were observed with PM2.5 for births < 37 weeks gestation (and for other pollutants at < 30 weeks). No consistent patterns suggested exposure windows of greater relevance.

conclusionAssociations between traffic-related air pollution and birth outcomes were observed in a population-based cohort with relatively low ambient air pollution exposure.

Indexed as

Air PollutantsBirth WeightBritish ColumbiaCohort StudiesEnvironmental MonitoringEpidemiological MonitoringFemaleHumansInfant, NewbornOdds RatioPregnancyPregnancy OutcomeRisk AssessmentVehicle EmissionsAir PollutantsVehicle Emissionsair pollutionbirth weightcarbon blackcarbon monoxidenitric oxidenitrogen dioxideparticulate matterpregnancypregnancy outcomepreterm birthsootsulfur dioxidevehicle emissions

Identifiers

PMID18470315
PMCPMC2367679
OpenAlexW2002094444

What OpenQuestion holds

Textmetadata
LicenceCC0
Read underepoch 390

Registered trials

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.