Predictors of Quality of Life Following Cognitive Processing Therapy among Women and Men with Post-Traumatic Stress Disorder

Abstract

Introduction: The effect of evidence-based post-traumatic stress disorder (PTSD) treatments on quality of life (QOL) is not well understood. In light of mixed findings on QOL after PTSD interventions, little is known about why some individuals experience functional and QOL improvements while others do not. This study examined treatment-related changes in depression, anger, and PTSD following cognitive processing therapy (CPT) as potential predictors of QOL change. Materials and Methods: Data from two randomized controlled trials, one examining CPT among female civilians and veterans (women's study NCT02362477; n = 126) and the other on CPT delivered to male veterans (men's study NCT00879255; n = 125), were used to test study aims. Linear mixed modeling examined changes in depression, anger, and PTSD as predictors of post-treatment QOL while controlling for baseline QOL. The VA Pacific Island Health Care System's Institutional Review Board approved all study procedures. Results: Among women, reductions in depression from pre- to post-treatment had the strongest predictive value of post-treatment QOL (B = -1.15, 95% confidence interval (-1.71, -0.60), t = -4.07, P