Post-traumatic symptom severity mediates the association between combat exposure and suicidal ideation in veterans.
Journal Article (Journal Article)
OBJECTIVE: Previous studies of military veterans have produced mixed findings regarding whether combat exposure is directly related to suicidal ideation or is indirectly related to suicidal ideation via its influence on other factors. The present study used a longitudinal design to test the hypothesis that post-traumatic stress disorder (PTSD) symptom severity mediates the effect of combat exposure on suicidal ideation in veterans. METHOD: Participants included 319 post-9/11 veterans (83.4% male; 42.1% White/52.1% Black; Mage = 39.7) assessed at baseline, 6, and 12 months. Structural equation modeling and bootstrapped confidence intervals were employed to examine the direct and indirect relationships between combat exposure, suicidal ideation, and PTSD symptom severity. RESULTS: Results from the mediation model, in which demographic variables and non-combat trauma were included as covariates, revealed that the indirect effect of combat exposure on suicidal ideation via PTSD symptom severity was statistically significant, accounting for 64.1% of the covariance between combat exposure and suicidal ideation. CONCLUSIONS: This study provides longitudinal evidence that the effects of combat exposure on suicidal ideation are mediated by PTSD symptom severity, suggesting the importance of targeting such symptoms in treatment to mitigate suicide risk among veterans with combat exposure.
- Beckham, Jean Crowell
- Calhoun, Patrick Shields
- Dennis, Paul Anthony
- Dillon, Kirsten H.
- Elbogen, Eric Bradley
- Kimbrel, Nathan Andrew
- Glenn, JJ; Dillon, KH; Dennis, PA; Patel, TA; Mann, AJ; Calhoun, PS; Kimbrel, NA; Beckham, JC; Elbogen, EB
- December 2020
Volume / Issue
- 50 / 6
Start / End Page
- 1167 - 1172
Pubmed Central ID
Electronic International Standard Serial Number (EISSN)
Digital Object Identifier (DOI)