CANreduce-SP-adding psychological support to web-based adherence-focused guided self-help for cannabis users : study protocol for a three-arm randomized control trial
Mestre-Pintó, Joan-Ignasi (Institut Hospital del Mar d'Investigacions Mèdiques)
Fonseca, Francina 1972- (Universitat Autònoma de Barcelona. Departament de Psiquiatria i de Medicina Legal)
Schaub, Michael P. (University of Zurich, Switzerland)
Baumgartner, Christian (University of Zurich, Switzerland)
Alías Ferri, María (Institut Hospital del Mar d'Investigacions Mèdiques)
Torrens, Marta (Universitat Autònoma de Barcelona. Departament de Psiquiatria i de Medicina Legal)

Data:	2022
Resum:	Cannabis is the most-frequently used illicit drug in Europe. Over the last few years in Spain, treatment demand has increased, yet most cannabis users do not seek treatment despite the related problems. A web-based self-help tool, like CANreduce 2. 0, could help these users to control their consumption. This study protocol describes a three-arm randomized controlled trial (RCT) comparing the effectiveness of three approaches, in terms of reducing cannabis use among problematic cannabis users, the first two treatment arms including the Spanish version of CANreduce 2. 0 (an adherence-focused, guidance-enhanced, web-based self-help tool) (1) with and (2) without psychological support; and the third group (3) treatment as usual (TAU). Study hypotheses will be tested concerning the primary outcome: change in the number of days of cannabis use over the previous week, comparing assessments at 6 weeks and 3 and 6 months follow-up between groups and against baseline. Secondary outcomes related to cannabis use will be tested similarly. Mental disorders will be explored as predictors of adherence and outcomes. Analyses will be performed on an intention-to-treat basis, then verified by complete case analyses. This study will test how effective the Spanish version of CANreduce 2. 0 (CANreduce-SP) is at reducing both the frequency and quantity of cannabis use in problematic users and whether adding psychological support increases its effectiveness. This trial is registered with the Clinical Trials Protocol Registration and Results System (PRS) number: . Registered 18 August 2020, (Archived by archive. is ). The project commenced in November 2020 and recruitment is anticipated to end by November 2022.
Ajuts:	Ministerio de Economía y Competitividad RD16/0017/0010 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-316
Nota:	Altres ajuts: Plan Nacional Sobre Drogas (PNSD) (2019I010); Acció instrumental d'Intensifcació de Professionals de la Salut - Facultatius especialistes (PERIS) (SLT006/17/00014).
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	CANreduce ; Cannabis use disorder ; Psychological support ; Cognitive behavioural therapy ; Randomized controlled trial ; Reducing cannabis ; Self-help tool ; Guidance ; Adherence
Publicat a:	Trials, Vol. 23, Num. 1 (june 2022) , ISSN 1745-6215

DOI: 10.1186/s13063-022-06399-2
PMID: 35733201

13 p, 1.8 MB

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