Comparing exposure assessment methods for traffic-related air pollution in an adverse pregnancy outcome study.

ABSTRACT:

Background

Previous studies reported adverse impacts of traffic-related air pollution exposure on pregnancy outcomes. Yet, little information exists on how effect estimates are impacted by the different exposure assessment methods employed in these studies.

Objectives

To compare effect estimates for traffic-related air pollution exposure and preeclampsia, preterm birth (gestational age less than 37 weeks), and very preterm birth (gestational age less than 30 weeks) based on four commonly used exposure assessment methods.

Methods

We identified 81,186 singleton births during 1997-2006 at four hospitals in Los Angeles and Orange Counties, California. Exposures were assigned to individual subjects based on residential address at delivery using the nearest ambient monitori

SUBMITTER: Wu J 

PROVIDER: S-EPMC3114297 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature