Trimbos Institute, Netherlands Institute of Mental Health and Addiction, Utrecht, The Netherlands.
Amsterdam UMC, Department of Psychiatry, University of Amsterdam, Amsterdam, The Netherlands.
Trials. 2021 Jan 6;22(1):28. doi: 10.1186/s13063-020-04962-3.
Heavy cannabis use is associated with adverse physical and mental health effects. Despite available effective treatments, the majority of heavy cannabis users does not seek professional help. Web-based interventions can provide an alternative for cannabis users who are reluctant to seek professional help. Several web-based cannabis interventions are effective in reducing cannabis use; however, the effect sizes are typically small and attrition rates are typically high. This suggests that web-based programs can be an effective cannabis use intervention for some, while others may need additional substance use treatment after completing a web-based intervention. Therefore, it is important that web-based interventions do not solely focus on reducing cannabis use, but also on improving attitudes towards substance use treatment. The Screening Brief Intervention and Referral to Treatment (SBIRT) approach appears to be well suited for the purpose of reducing cannabis use and improving substance use treatment utilization. Based on the SBIRT approach-and based on cognitive behavioral therapy (CBT) and motivational interviewing (MI)-we developed the Internet-based cannabis reduction intervention ICan.
METHODS/DESIGN: This protocol paper presents the design of a randomized controlled trial (RCT) in which we evaluate the effectiveness of the ICan intervention compared to four online modules of educational information on cannabis in a sample of Dutch frequent cannabis users. The primary outcome measure is frequency of cannabis use. Secondary outcome measures include the quantity of cannabis used (grams), the attitudes towards seeking help and the number of participants who enter specialized treatment services for cannabis use-related problems.
To the best of our knowledge, ICan is the first Internet-based intervention for cannabis users that combines screening, a brief intervention-based on CBT and MI-and referral to treatment options.
The study is registered in the Netherlands Trial Register; identifier NL7668 . Registered on 17 April 2019.
重度大麻使用与不良的身心健康后果有关。尽管有有效的治疗方法，但大多数重度大麻使用者并不寻求专业帮助。基于网络的干预措施可以为不愿意寻求专业帮助的大麻使用者提供另一种选择。一些基于网络的大麻干预措施在减少大麻使用方面是有效的；然而，效果大小通常较小，并且失访率通常较高。这表明，对于一些人来说，基于网络的程序可以是一种有效的大麻使用干预措施，而对于其他人来说，在完成基于网络的干预后，可能需要额外的物质使用治疗。因此，重要的是，基于网络的干预措施不仅要注重减少大麻使用，还要注重改善对物质使用治疗的态度。筛选、简短干预和转介治疗（SBIRT）方法似乎非常适合减少大麻使用和提高物质使用治疗利用率的目的。基于 SBIRT 方法，并基于认知行为疗法（CBT）和动机性访谈（MI），我们开发了基于互联网的大麻减少干预措施 ICan。
方法/设计：本方案论文介绍了一项随机对照试验（RCT）的设计，在该试验中，我们评估了与四个关于大麻的在线教育模块相比，ICan 干预对荷兰经常使用大麻的参与者的有效性。主要结果测量是大麻使用的频率。次要结果包括使用大麻的数量（克）、寻求帮助的态度以及进入专门的大麻使用相关问题治疗服务的参与者人数。
据我们所知，ICan 是第一个结合筛选、基于 CBT 和 MI 的简短干预以及转介治疗选择的针对大麻使用者的基于互联网的干预措施。
该研究在荷兰试验登记处注册；标识符 NL7668。于 2019 年 4 月 17 日注册。
