Integrating Public Data Sets for Analysis of Maternal Airborne Environmental Exposures and Stillbirth Eric S. Hall, PhD1,2, Natalia Connolly, PhD2, David E. Jones, MA MPH3, and Emily A. DeFranco, DO MS1,4 1 Perinatal Institute, Cincinnati Children's Hospital Medical Center, 2Biomedical Informatics, Cincinnati Children's Hospital Medical Center, 3Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, 4Maternal-Fetal Medicine, University of Cincinnati Cincinnati, Ohio Abstract Efforts to study relationships between maternal airborne pollutant exposures and poor pregnancy outcomes have been frustrated by data limitations. Our objective was to report the proportion of Ohio women in 2006-2010 experiencing stillbirth whose pregnancy exposure to six criteria airborne pollutants could be approximated by applying a geospatial approach to vital records and Environmental Protection Agency air monitoring data. In addition, we characterized clinical and socio-demographic differences among women who lived within 10 km of monitoring stations compared to women who did not live within proximity of monitoring stations. For women who experienced stillbirth, 10.8% listed a residence within 10 km of each type of monitoring station. Maternal race, education, and marital status were significantly different (p 42 weeks Birth weight