Risk factors associated with posttraumatic stress disorder in US veterans: A cohort study

Abstract

Objective: To assess the association between clinical and exercise test factors and the development of posttraumatic stress disorder (PTSD) in US Veterans. Patients and methods: Exercise capacity, demographics and clinical variables were assessed in 5826 veterans (mean age 59.4 ± 11.5 years) from the Veterans Affairs Healthcare System in Palo Alto, CA. The study participants underwent routine clinical exercise testing between the years 1987 and 2011. The study end point was the development of PTSD. Results: A total of 723 (12.9%) veterans were diagnosed with PTSD after a mean follow-up of 9.6 ± 5.6 years. Drug abuse (HR: 1.98, CI: 1.33–2.92, p = .001), current smoking (HR: 1.57, CI: 1.35–2.24, p