Associations of short-term changes in air pollution with spontaneous preterm birth: A time-stratified case-crossover analysis.
Spontaneous preterm birth (sPTB) is a leading cause of neonatal morbidity in the United States. Genetics incompletely explains sPTB risk and environmental contributions remain poorly understood. We analyzed associations of short-term fine particulate matter (PM2.5) exposure with sPTB in two datasets: 109,735 sPTBs in M...