New Onset and Persistent Symptoms of Posttraumatic Stress Disorder Self Reported After Deployment and Combat Exposures: Prospective Population Based U.S. Military Cohort

Baseline and three-year follow-up data from Service members from all branches of the military were used to describe new onset and persistence of self-reported posttraumatic stress disorder (PTSD) symptoms in a large, population-based military cohort. New onset self-reported PTSD symptoms were identified in 8-9% of Service members who reported combat exposures during their deployment, 1-2% of Service members who deployed but did not experience combat, and 2-3% of those who did not deploy.