Stress, Violence, Depression, and Low Social Support and Their Association with Preterm Birth in a Brazilian Cohort

Background. Studies have identified a trend towards suboptimal birth outcomes, including preterm birth (PTB), in women who experience psychological adversities (stress, depression, domestic violence, and low social support) during pregnancy. Objective. To evaluate the association of stress, depression, domestic violence, and low social support with PTB. Methods. This is a retrospective cohort study that used data of women assessed between February 2011 and February 2012. The primary outcome of the study was the occurrence of spontaneous PTB