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Posttraumatic stress disorder's role in integrated substance dependence and depression treatment outcomes
Sonya B Norman1, Susan R Tate, Kendall C Wilkins
1VA San Diego Healthcare System and University of California, San Diego, San Diego, CA 92161, USA.
Abstract:
Posttraumatic stress disorder (PTSD) frequently co-occurs with depression and substance use disorder (SUD). This study investigates the impact of PTSD diagnosis on treatment outcomes of 178 veterans treated for depression and SUD, with Integrated Cognitive-Behavioral Therapy (ICBT) or 12-Step Facilitation Therapy (TSF). Percentage days abstinent (PDA) and Hamilton Depression Rating Scale total score (HDRS total) trajectories were created. PDA was similar through initial follow-up; however, by 18 months, ICBT participants without PTSD had better PDA (M = 91%) than those without PTSD in TSF (M = 76%) and those with PTSD in either group (M = 75%-77%). Across time, participants with PTSD had higher depression levels than those without PTSD but benefited similarly from treatment (main effect, p < .004). Both conditions demonstrated reductions in average HDRS at 18 months (M = 17%-29%). Findings highlight the need to assess for PTSD and to investigate how to treat concomitant SUD, depression, and PTSD.
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