Web-based self-help with and without chat counseling to reduce cocaine use in cocaine misusers: Results of a three-arm randomized controlled trial
Schaub MP, Castro RP, Wenger A, Baumgartner C, Stark L, Ebert D, Quednow BB, Haug S (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 17
Article Number: 100251
DOI: 10.1016/j.invent.2019.100251
Abstract
Background: In recent years, cocaine use has increased in many countries, but only a minority of users seek treatment. Cognitive behavioral therapy (CBT) is seen as first-choice face-to-face treatment. However, a web-based intervention might serve as an alternative. Aims: To test the efficacy of a web-based self-help intervention, with and without chat counseling, grounded in CBT, at reducing cocaine use in cocaine misusers not in treatment for a substance use disorder. Methods: Subjects were randomly assigned to (1) a self-help intervention with chat support, (2) a self-help intervention without chat support, or (3) a waiting list control group. The fully-automated self-help program consisted of eight modules based on motivational interviewing, self-control practices and CBT. The primary outcome was the quantity of cocaine use per week. Secondary outcomes included frequency of cocaine and other substance use and mental health symptoms. Linear regression analysis was performed to investigate changes in primary and secondary outcomes. Results: In total, 416 users registered online for the trial, of whom 311 completed the baseline assessment. Participants were predominantly male (73%) and averaged 33 years old (SD = 7.6). Despite considerable efforts on our part, only 47 of 311 (15.1%) subjects completed the 6-month follow-up assessment. Frequency of cocaine use and severity of cocaine dependence decreased only in the intervention groups. No significant difference in the primary outcome was observed between the study arms, but several differences in secondary outcomes were observed by complete case analyses. Conclusions: Many cocaine misusers from the general population and not otherwise in treatment could be reached and decreased their cocaine use utilizing a CBT-based online intervention. However, due to the high percentage of dropouts and serious difficulties reaching subjects for follow-up assessments, no conclusions can be drawn regarding study arm differences. Implications for future studies are discussed.
Authors with CRIS profile
Involved external institutions
University of Zurich / Universität Zürich (UZH)
Switzerland (CH)
Arud Zentrum für Suchtmedizin
Switzerland (CH)
Switzerland (CH)
Arud Zentrum für Suchtmedizin
Switzerland (CH)
How to cite
APA:
Schaub, M.P., Castro, R.P., Wenger, A., Baumgartner, C., Stark, L., Ebert, D.,... Haug, S. (2019). Web-based self-help with and without chat counseling to reduce cocaine use in cocaine misusers: Results of a three-arm randomized controlled trial. Internet Interventions, 17. https://dx.doi.org/10.1016/j.invent.2019.100251
MLA:
Schaub, Michael P., et al. "Web-based self-help with and without chat counseling to reduce cocaine use in cocaine misusers: Results of a three-arm randomized controlled trial." Internet Interventions 17 (2019).
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