An interventional study of Standard treatment and Standard Treatment Plus Contingency Management Program in Marijuana Abuse, sponsored by Hospital Clinic of Barcelona. Status unknown at 1 site in Spain. Open to participants aged 12 Years to 18 Years. Per ClinicalTrials.gov, last updated 2009-05-21.
Sponsored by Hospital Clinic of Barcelona · Not applicable, Interventional, and Treatment
Cannabis use among Spanish adolescents has been increasing in the last decade. It has been related to poor school achievement, delinquency, substance use and psychiatric disorders. Furthermore, psychoactive substance use in adolescents presenting psychiatric disorders can result in the development of substance use disorders or the worsening of psychopathology. Thus, there's an urge to develop efficient interventions in the treatment of these disorders. Therapeutic approaches based on cognitive-behavioural therapy and motivational interviewing have demonstrated a limited efficacy in this population. Programs based on contingency management have been reported to be useful both in adult and adolescents, too. But it still remains unclear whether a combination of these therapeutic approaches is feasible and brings a better cost-benefit relation.
The investigators' project aims to evaluate the added benefits of supplementing a standard intervention on cannabis use, based on combined approach that includes motivational and cognitive-behavioural elements, with a contingency management program. Therefore, pre and post-treatment evaluation will be carried forward in a sample of 30 adolescents (aged 12-18) that initiate treatment for cannabis use related disorder at the Child and Adolescent Psychiatry Department of the Hospital Clinic in Barcelona. Participants will be randomly assigned to a standard treatment group or an experimental group in which standard treatment will be supplemented with a contingency management protocol. As a secondary objective, a prospective assessment of neuropsychological performance related to cannabis use or abstinence will be carried forward.
517 studies on the registry are indexed under Marijuana Abuse; 114 are open to participants now.
This study's planned enrollment of 30 is below the median of 60 across 421 interventional studies indexed under Marijuana Abuse.
Browse Marijuana Abuse studies →Hospital Clinic of Barcelona is the lead sponsor of 319 studies on the registry; 55 are open to participants now.
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Exclusion Criteria:
Participants will be randomly assigned to a standard treatment group. Patients allocated to this group will receive active treatment in form of a 12-session intervention program. This program includes weekly intervention sessions developed according to the MET/CBT12 treatment protocol (Sampl, Kadden, 2001)
Behavioral: Standard treatment
Participants randomly assigned to this group will received standard treatment (including 12 session therapy program) supplemented with an intervention with a contingency management program, designed to improve adherence and efficacy of the treatment program.
Behavioral: Standard Treatment Plus Contingency Management Program
Participants will be randomly assigned to a standard treatment group. Patients allocated to this group will receive active treatment in form of 12-session intervention program. This program includes weekly intervention sessions developed according to the MET/CBT12 treatment protocol (Sampl, Kadden, 2001). Intervention includes Motivational interviewing (2 sessions) and Cognitive behavioral therapy
Participants assigned to this group will receive active treatment in form of 12-session intervention program. This program includes weekly intervention sessions developed according to the MET/CBT12 treatment protocol (Sampl, Kadden, 2001). Intervention includes Motivational interviewing (2 sessions) and Cognitive behavioral therapy (10 sessions). This treatment protocol will be supplemented with a contingency management intervention. Intervention will consist in a voucher program: negative urine-screens will be rewarded with vouchers. Voucher will have an increasing value. At the end of the program, vouchers can be changed by gifts. Potential gifts will be selected by the therapists and will be related to pro-social activities, aiming to change preexisting risk behaviours.
Percentage of marijuana active users
Time frame: 12 weeks
Percentage of negative urine-screens
Time frame: 12 weeks
Percentage of completed intervention sessions
Time frame: 12 weeks
Scores in psychopathology and drug scales (T-ASI, SDQ, BDI, Cannabis Problem Questionnaire)
Time frame: 12 weeks
This study is status unknown, as verified in May 2009. You cannot join it, but the record below documents what was studied.
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Hospital Clinic of Barcelona