Traffic-related air pollution and risk of preterm birth in the San Joaquin Valley of California.

ABSTRACT:

Purpose

To evaluate associations between traffic-related air pollution during pregnancy and preterm birth in births in four counties in California during years 2000 to 2006.

Methods

We used logistic regression to examine the association between the highest quartile of ambient air pollutants (carbon monoxide, nitrogen dioxide, particulate matter <10 and 2.5 μm) and traffic density during pregnancy and each of five levels of prematurity based on gestational age at birth (20-23, 24-27, 28-31, 32-33, and 34-36 weeks) versus term (37-42 weeks). We examined trimester averages and the last month and the last 6 weeks of pregnancy. Models were adjusted for birthweight, maternal age, race/ethnicity, education, prenatal care, and birth costs payment. Neighborhood socioeconomic status (

SUBMITTER: Padula AM 

PROVIDER: S-EPMC4355392 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature