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We express our gratitudeto all the participants who took part in the focus groups. This study was funded by the Instituto de Salud Carlos III (ISCIII) , the European Union NextGenerationEU, and the Mecanismo para la Recuperacion y la Resiliencia (MRR; grants RD21/0009/0001, RD21/0009/0004, RD21/0009/0007, RD21/0009/0010, and RD21/0009/0025) .

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Evaluating Perceptions of the CANreduce 2.0 eHealth Intervention for Cannabis Use: Focus Group Study

Publicat a:Journal Of Medical Internet Research. 27 e65025- - 2025-03-19 27(), DOI: 10.2196/65025

Autors: Folch-Sanchez, Daniel; Pellicer-Roca, Maria; Sestelo, Maria Agustina; Zuluaga, Paola; Arias, Francisco; Cortez, Pablo Guzman; Amechat, Salma; Gil-Berrozpe, Gustavo; Montes, Estefania Lopez; Mercade, Clara; Fonseca, Francina; Miquel, Laia; Mestre-Pinto, Joan, I

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Background: Cannabis is the most widely used illicit drug, and admissions for cannabis use disorders (CUDs) are increasing globally, posing a significant public health challenge. Despite its negative consequences, a substantial proportion of individuals with problematic use do not seek treatment. In recent years, digital health interventions (DHIs) have emerged as accessible and cost-effective solutions, empowering users to manage their health care. CANreduce is one such eHealth intervention that has demonstrated effectiveness in reducing cannabis use (CU); however, its suboptimal adherence rates underscore the need for strategies to enhance user engagement and motivation. Objective: This study aims to improve the effectiveness, adherence, and user experience of the Spanish version of CANreduce 2.0 by employing focus groups (FGs) within a user-centered design approach that actively involves both users and professionals. Methods: Separate FGs were conducted for users and professionals, involving a total of 10 participants. Users were recruited from individuals registered on the CANreduce 2.0 platform and active cannabis users, while professionals comprised addiction specialists familiar with the platform. Each session was held remotely and moderated by 2 interviewers following a semistructured script. Qualitative analysis of the transcripts was performed using MAXQDA software and content analysis methodology to identify key themes related to the acceptability, usability, and utility of CANreduce 2.0. Results: The qualitative analysis identified 3 main themes, encompassing 15 subcodes. Within the "motivation and awareness" theme, both users (n=6, mean age 31.8 years, SD 4.1 years) and professionals (n=4, mean age 37.25 years, SD 1.71 years) frequently discussed the importance of "motivation" and "problem awareness" as crucial for the success of CANreduce 2.0. In the "guidance and use" theme, the subcode "complement to face-to-face therapy" was the most emphasized. Professionals supported CANreduce 2.0 as a valuable adjunct to in-person therapy, serving as both an educational and monitoring tool, with no objections raised by either group. Lastly, within the "content and design" theme, "information," "small achievements," and "personalized content" emerged as key areas for improvement, highlighting the need to enhance motivation and adherence through gamification and tailored content. Conclusions: Personalization, robust motivational strategies, and an engaging, interactive design are essential for the success of DHIs, particularly in addiction treatment. Collaboration among technology developers, health care professionals, and users should be central to the development process, fostering the cocreation of practical and effective solutions that are responsiveto the needs of those seeking treatment. This approach ensures that DHIs are not only functional but also widely accepted and impactful. Insights from this study will inform the ongoing refinement of CANreduce 2.0, enhancing its relevance and effectiveness in addressing CU.

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