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In 2006, a reanalysis of data from the earlier National Vietnam Veterans Readjustment Study (NVVRS) used newly strict criteria and found that lifetime and current prevalences of war-zone–associated post-traumatic stress disorder (PTSD) were 19% and 9%, respectively. A follow-up study, the National Vietnam Veterans Longitudinal Study, now provides data about the longitudinal course of PTSD in 1238 of these veterans, who completed a self-report questionnaire and a computer-assisted telephone interview, and a subset of 400, who completed a diagnostic telephone interview.
According to DSM-5 criteria, the current and lifetime prevalences of warzone-related PTSD were 4.5% and 17% in men (women, 6.1% and 15.2%). Rates were higher when DSM-5 PTSD wa…