Lagged effects of substance use on PTSD severity in a randomized controlled trial with modified prolonged exposure and relapse prevention.
Lagged effects of substance use on PTSD severity in a randomized controlled trial with modified prolonged exposure and relapse prevention.
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DOI:
10.1037/ccp0000345
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发表时间:
2018-10
影响因子:
5.9
通讯作者:
Papini S
中科院分区:
文献类型:
--
作者:
Hien DA;Smith KZ;Owens M;López-Castro T;Ruglass LM;Papini S
To advance understanding the effectiveness of evidence-based treatments for comorbid posttraumatic stress and substance use disorders (PTSD and SUD), research must provide a more nuanced picture of how substance use affects change in PTSD symptoms over the course of treatments, and whether prolonged exposure techniques can be efficacious during active substance use. A dataset that included patients with PTSD/subthreshold PTSD and SUD treated with an exposure-based intervention provided an opportunity to conduct a secondary analysis to test how patients’ substance use impacted PTSD change over treatment. We applied growth models to week-to-week PTSD symptom and substance use changes during treatment and follow-up of a randomized controlled trial of two cognitive behavioral treatments for PTSD and SUD: Concurrent Treatment of PTSD and SUD Using Prolonged Exposure (COPE) and Relapse Prevention Therapy (RPT). Cross-lagged analyses were used to determine whether prior week substance use impacted subsequent PTSD symptom severity. Both treatments evidenced significant reductions in PTSD symptom severity. In the context of continued substance use, results suggest that individuals still benefit from exposure-based treatment. Results provide evidence that RPT and COPE both led to significant reductions in PTSD, providing further support that exposure-based techniques tailored for SUD can be conducted without jeopardizing PTSD or SUD outcomes. Implications for clinical decision-making around treatment selection are discussed.
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