Post-Traumatic Stress Disorder and Blast Exposure in Active-Duty Military Service Members

Objective: Active-duty military personnel in the current wars have experienced unique stressors that deviate from standard PTSD assessment and diagnosis. This situation calls for a refinement of military-related PTSD assessment. To this end, this study assessed the utility of the Trauma Symptom Inventory (TSI) in diagnosing PTSD among active-duty military personnel. The past literature has validated the TSI using populations with a small sample size. Hence, this study aimed to fill the gap by using a large sample size of 670 military members to examine whether the TSI is useful for military populations. Setting: Participants were referred to Carolina Psychological Health Services, in Jacksonville, North Carolina by military neurologists and other qualified medical officers from the Naval Hospital in Camp Lejeune, a military base located in Jacksonville, NC, for neuropsychological evaluation due to reported cognitive deficits related to military deployment (i.e., head injury due to exposure to blast injuries). Participants: Based on clinical diagnosis, comprehensive neuropsychological testing, and self-reported data, personnel were classified into four groups: blast exposure (n = 157), PTSD diagnosis (n = 90), both blast exposure and PTSD (n = 283), and neither blast exposure nor PTSD (n = 140), which helps provide a comprehensive picture of the utility of the TSI. Results: The TSI’s 10 clinical scales could distinguish between all groups. Discriminant function analysis showed that an optimally weighted combination of scales correctly predicted 66.67% of PTSD-positive cases and 35.11% of PTSD-negative cases. Conclusion: These findings provide support for the use of the TSI in the assessment of PTSD in active-duty military personnel. Due to the release of TSI-2, there is a need to replicate this data. However, the validity data has indicated a high concordance between the TSI and TSI-2, bolstering confidence in the current findings of the study.