• Addictive behaviors · Jun 2015

    Randomized Controlled Trial Multicenter Study Comparative Study

    Web-based treatment for substance use disorders: differential effects by primary substance.

    • Gerald Cochran, Maxine Stitzer, Aimee N C Campbell, Mei-Chen Hu, Ryan Vandrey, and Edward V Nunes.
    • University of Pittsburgh, School of Social Work, 4200 Forbes Ave., 2117 CL, Pittsburgh, PA 15260, United States. Electronic address: gcochran@pitt.edu.
    • Addict Behav. 2015 Jun 1; 45: 191-4.

    IntroductionThis secondary analysis of data from a large, multi-site effectiveness trial (NCT01104805) sought to determine whether effects of a web-based behavioral treatment (Therapeutic Education System [TES]) differed by participants' self-identified primary drug of abuse.MethodsThe all-comers sample of individuals entering outpatient psychosocial counseling treatment for substance abuse (N=497) cited cannabis (22.9%; n=114), stimulants (34.4%, n=171), opioids (21.7%, n=108), or alcohol (20.9%, n=104) as their primary substance of abuse. Participants were randomly assigned to receive treatment-as-usual (TAU) with or without TES substituted for approximately 2h of usual counseling. Multivariate analyses of abstinence outcomes examined interactions of treatment effects with primary substance.ResultsAdjusted odds ratios (AORs) demonstrated that primary stimulant users receiving TES were more likely to be abstinent in the final four weeks of treatment compared to stimulant users receiving TAU (AOR=3.59, 95% CI=1.25-10.27). Adjusted odds ratios for alcohol (AOR=3.15, 95% CI=0.85-11.65) and cannabis (AOR=2.64, 95% CI=0.73-9.52) also were of similar magnitude to stimulants but did not reach significance. Abstinence among primary opioid users was not improved by the TES intervention (AOR=0.35, 95% CI=0.09-1.47).ConclusionsThis study supports the TES web-delivered treatment as a viable intervention for the majority of substance users entering outpatient counseling treatment, with demonstrated effectiveness among stimulant users and promising effects in alcohol and cannabis users but little or no effect in primary opioid users. Web-delivered treatments hold promise for expanding the availability of effective behavioral interventions for the majority of substance use disorders.Copyright © 2015 Elsevier Ltd. All rights reserved.

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