CANreduce 2.0 Adherence-Focused Guidance for Internet Self-Help Among Cannabis Users: Three-Arm Randomized Controlled Trial

Baumgartner, Christian; Schaub, Michael Patrick; Wenger, Andreas; Malischnig, Doris; Augsburger, Mareike; Walter, Marc; Berger, Thomas; Stark, Lars; Ebert, David Daniel; Keough, Matthew T; Haug, Severin

doi:10.2196/27463

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Baumgartner, C., Schaub, M. P., Wenger, A., Malischnig, D., Augsburger, M., Walter, M., Berger, T., Stark, L., Ebert, D. D., Keough, M. T., & Haug, S. (2021). CANreduce 2.0 Adherence-Focused Guidance for Internet Self-Help Among Cannabis Users: Three-Arm Randomized Controlled Trial. Journal of Medical Internet Research, 23(4), e27463. https://doi.org/10.2196/27463

Abstract

Background: Despite increasing demand for treatment among cannabis users in many countries, most users are not in treatment. Internet-based self-help offers an alternative for those hesitant to seek face-to-face therapy, though low effectiveness and adherence issues often arise.

Objective: Through adherence-focused guidance enhancement, we aimed to increase adherence to and the effectiveness of internet-based self-help among cannabis users.

Methods: From July 2016 to May 2019, cannabis users (n=775; male: 406/575, 70.6%, female: 169