Web-Delivered CBT Reduces Heavy Drinking in OEF-OIF Veterans in Primary Care With Symptomatic Substance Use and PTSD.

Veterans from conflicts such as the wars in Iraq and Afghanistan commonly return with behavioral health problems, including posttraumatic stress disorder (PTSD) and hazardous or harmful substance use. Unfortunately, many veterans experience significant barriers to receiving evidence-based treatment, including poor treatment motivation, concerns about stigma, and lack of access to appropriate care. To address this need, the current study developed and evaluated a web-based self-management intervention based on cognitive behavioral therapy (CBT), targeting PTSD symptoms and hazardous substance use in a group of symptomatic combat veterans enrolled in VA primary care. Veterans with PTSD/subthreshold PTSD and hazardous substance use were randomized to primary care treatment as usual (TAU; n = 81) or to TAU plus a web-based CBT intervention called Thinking Forward (n = 81). Thinking Forward consisted of 24 sections (approximately 20 minutes each), accessible over 12 weeks. Participants completed baseline and 4-, 8-, 12-, 16-, and 24-week follow-up assessments. Three primary outcomes of PTSD, alcohol and other drug use, and quality of life were examined. Significant treatment effects were found for heavy drinking, but not for PTSD or quality of life. The effect of the intervention on heavy drinking was mediated by intervening increases in coping, social support, self-efficacy, and hope for the future. These results demonstrate the promise of a web-based, self-management intervention for difficult-to-engage OEF/OIF veterans with behavioral health and substance use concerns.