Acute Impact of Hourly Ambient Air Pollution on Preterm Birth.

ABSTRACT:

Background

Preterm birth is a major perinatal health problem, but factors leading to it are still not completely understood.

Objectives

Our goal was to identify the relation between acute increase in ambient air pollution in a few hours before onset of labor and the risk of preterm birth.

Methods

We collected registered birth outcome data and hourly ambient air pollution measurements during 2009‒2013 in Brisbane, Australia. Using a time-stratified case-crossover design and conditional logistic regression models with natural cubic splines, we assessed the shape of air pollution-preterm birth curve, after controlling for potential confounders. We also examined the effect modification of other factors.

Results

The association between air pollution [nitrogen dioxid

SUBMITTER: Li S 

PROVIDER: S-EPMC5047774 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature