Evidence map›Paper›PMID 39761605›Full record

ArticleInternational journal of epidemiology2024

Changes in traffic-related air pollution exposures and associations with adverse birth outcomes over 20 years in Texas.

Perry Hystad, Elaine L Hill, Andrew Larkin, David Schrank, Max Harleman, Evan Volkin, Erin J Campbell, John Molitor, Lena Harris, Beate R Ritz and 1 more

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Article in International journal of epidemiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Perry HystadSchool of Nutrition and Public Health, College of Health, Oregon State University, Corvallis, OR, USA.
Elaine L HillDepartment of Economics, School of Arts and Sciences, University of Rochester, Rochester, NY, USA.
Andrew LarkinSchool of Nutrition and Public Health, College of Health, Oregon State University, Corvallis, OR, USA.
David SchrankTexas Transportation Institute, Texas A&M, Bryan, TX, USA.
Max HarlemanDepartment of Government and Sociology, College of Arts and Sciences, Georgia College & State University, Milledgeville, GA, USA.
Evan VolkinDepartment of Economics, School of Arts and Sciences, University of Rochester, Rochester, NY, USA.
Erin J CampbellDepartment of Epidemiology, School of Public Health, Boston University, Boston, MA, USA.
John MolitorSchool of Nutrition and Public Health, College of Health, Oregon State University, Corvallis, OR, USA.
Lena HarrisDepartment of Economics, School of Arts and Sciences, University of Rochester, Rochester, NY, USA.
Beate R RitzDepartment of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, USA.ORCID 0000-0001-6976-7339
Mary D WillisSchool of Nutrition and Public Health, College of Health, Oregon State University, Corvallis, OR, USA.

Funding

Health Effects Institute
6 · The paper itself

Abstract

backgroundBillions of dollars have been spent implementing regulations to reduce traffic-related air pollution (TRAP) from exhaust pipe emissions. However, few health studies have evaluated the change in TRAP emissions and associations with infant health outcomes. We hypothesize that the magnitude of association between vehicle exposure measures and adverse birth outcomes has decreased over time, parallelling regulatory improvements in exhaust pipe emissions.

methodsUsing birth records in Texas from 1996 to 2016, we calculated residential exposure measures related to TRAP: nitrogen dioxide (NO2, a marker of the TRAP mixture), vehicle miles travelled within 500 m of homes (VMT500), a measure of traffic volume, and highway proximity. Using an accountability study framework, our analysis examined term birthweight, term low birthweight (TLBW) (<2500 g), preterm birth (PTB) (<37 weeks) and very preterm birth (VPTB) (<32 weeks). We implemented linear and logistic regression models to examine overall and time-stratified associations, including trends by race/ethnicity and socioeconomic groups.

resultsAmong exposures for 6 158 518 births, NO2 exposures decreased 59% over time but VMT500 remained relatively stable. TRAP-related exposure measures were persistently associated with harmful birth outcomes [e.g. OR1996-2016 of 1.07 (95% CI: 1.04, 1.08) for TLBW comparing the highest vs lowest NO2 quintile]. The magnitude of associations decreased for total VMT500 and TLBW (-60%, OR1996: 1.08 to OR2016: 1.03 for the highest vs lowest quintile) and PTB (-65%) and VTPT (-61%), but not for term birthweight.

conclusionsWe observed evidence of small improvements in birth outcomes associated with reductions in exhaust pipe emissions over a 20-year period in Texas.

Indexed as

Air PollutionInfant, Low Birth WeightPremature BirthTraffic-Related PollutionVehicle EmissionsAdultAir PollutantsBirth WeightEnvironmental ExposureFemaleHumansInfant, NewbornLogistic ModelsMaleMaternal ExposureNitrogen DioxideAir PollutantsNitrogen DioxideVehicle Emissionsaccountability studyAir pollutionbirthweightpolicy evaluationpreterm birthtrafficvehicle regulations

Identifiers

PMID39761605
PMCPMC11703368

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