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Predictors of Trauma and PTSD among Heroin Users: A Prospective Longitudinal Investigation

This study is the first to examine exposure to trauma and the development of PTSD prospectively among heroin users. Participants were 309 heroin users followed up over two years as part of the Australian Treatment Outcome Study. Forty-one percent reported trauma exposure, and 5.8% developed PTSD over the follow-up period. Baseline characteristics that independently predicted trauma exposure were younger age and a history of imprisonment. Those who developed PTSD did not differ from those with a history of PTSD at baseline on any characteristics. Those who developed PTSD were, however, more likely to have a history of attempted suicide compared to those with no history of PTSD. These findings suggest that there is a need for trauma prevention programs particularly targeting younger people, those with a history of imprisonment, and those with a history of attempted suicide, who may be more susceptible to trauma exposure and the development of PTSD.