Sponsor
This research was supported in part by an appointment to the Research Participation Program for the U.S. Environmental Protection Agency (EPA), Office of Research and Development, administered by the Oak Ridge 1 Institute for Science and Education through an interagency agreement between the U.S. Department of Energy and EPA.
Published In
Environmental Health Perspectives
Document Type
Post-Print
Publication Date
5-30-2014
Subjects
Environmental exposure -- Adverse effects, Air -- Pollution -- Health aspects, Prenatal influences
Abstract
Background: Particulate matter < 2.5 micrometers in aerodynamic diameter (PM2.5) has been variably associated with preterm birth (PTB).
Objective: We classified preterm births into four categories (20–27, 28–31, 32–34, and 35–36 weeks completed gestation) and estimated risk differences (RD) for each category in association with a 1-µg/m3 increase in PM2.5 exposure during each week of gestation.
Methods: We assembled a cohort of singleton pregnancies that completed at least 20 weeks of gestation during 2000-2005 using live birth certificate data from three states (Pennsylvania, Ohio, and New Jersey) (n = 1,940,213; 8% PTB). We estimated mean PM2.5 exposures for each week of gestation from monitor-corrected Community Multi-Scale Air Quality modeling data. RDs were estimated using modified Poisson linear regression, adjusted for maternal race/ethnicity, marital status, education, age, and ozone.
Results: RD estimates varied by exposure window and outcome period. Average PM2.5 exposure during the fourth week of gestation was positively associated with all PTB outcomes, though magnitude varied by PTB category (e.g., for a 1-μg/m3 increase, RD = 11.8 (95% CI: -6, 29.2); RD = 46 (95% CI: 23.2, 68.9); RD = 61.1 (95% CI: 22.6, 99.7); and RD = 28.5 (95% CI: -39, 95.7) for preterm births during 20-27, 28-31, 32-34, and 35-36 weeks, respectively). Exposures during the week of birth and the two weeks before birth also were positively associated with all PTB categories. Conclusions: Exposures beginning around the time of implantation and near birth appeared to be more strongly associated with PTB than exposures during other time periods. Because particulate matter exposure is ubiquitous, evidence of effects of PM2.5 exposure on PTB, even if small in magnitudes, is cause for concern.
DOI
10.1289/ehp.1307456
Persistent Identifier
http://archives.pdx.edu/ds/psu/12332
Citation Details
Rappazzo, K., Daniels, J., Messer, L., Poole, C., & Lobdell, D. (2014). Exposure to Fine Particulate Matter during Pregnancy and Risk of Preterm Birth among Women in New Jersey, Ohio, and Pennsylvania, 2000-2005. Environmental Health Perspectives,
Included in
Community Health and Preventive Medicine Commons, Environmental Public Health Commons, Maternal and Child Health Commons
Description
Reproduced with permission from Environmental Health Perspectives.
http://ehp.niehs.nih.gov/1307456/