The USS Cole Bombing: Analysis of Pre-Existing Factors as Predictors for Development of Post-Traumatic Stress or Depressive Disorders

Abstract

To determine if pre-existing demographic factors (e.g., age, marital status, military rank) forecasted predisposition or resilience to the development of post-traumatic stress or depressive symptoms in the crew of the USS Cole following the suicide bombing in 2000. The Zung Self-Rating Depression Scale and the Impact of Event Scale-Revised (IES-R) were administered to the crew. Demographic data were also collected and analyzed to discover to what extent, if any, pre-existing demographic factors had on the mean scores of the Zung and IES-R. The results revealed that higher rank, older age, and male gender were protective factors against developing symptoms of posttraumatic stress; whereas lower rank, younger age, female gender, and having been injured or having had a friend injured or killed were associated with the development of symptoms. Other pre-existing factors examined did not demonstrate any predictive value. These findings increase our understanding of which pre-existing demographic factors might portend susceptibility to the development of post-traumatic stress and depressive symptoms, knowledge that we hope can contribute to the U.S. military's ongoing efforts to develop therapeutic interventions better targeted to individual needs.