Association of Long-term Exposure to Airborne Particulate Matter of 1 μm or Less With Preterm Birth in China.

ABSTRACT: Importance:Airborne particulate matter pollution has been associated with preterm birth (PTB) in some studies. However, most of these studies assessed only populations living near monitoring stations, and the association of airborne particulate matter having a median diameter of 1 μm or less (PM1) with PTB has not been studied. Objective:To evaluate whether PM1 concentrations are associated with the risk of PTB. Design, Setting, and Participants:This national cohort study used National Free Preconception Health Examination Project data collected in 324 of 344 prefecture-level cities from 30 provinces of mainland China. In total, 1 300 342 healthy singleton pregnancies were included from women who were in labor from December 1, 2013, through November 30, 2014. Data analysis was conducted be

SUBMITTER: Wang YY 

PROVIDER: S-EPMC5885853 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature