大麻使用者在线干预中简短个性化反馈与扩展个性化反馈的比较：一项随机试验的短期结果

Comparison of brief versus extended personalised feedback in an online intervention for cannabis users: Short-term findings of a randomised trial.

作者信息

Copeland Jan, Rooke Sally, Rodriquez Dan, Norberg Melissa M, Gibson Lisa

机构信息

National Cannabis Prevention and Information Centre, UNSW Australia, Sydney, NSW 2052, Australia.

National Cannabis Prevention and Information Centre, UNSW Australia, Sydney, NSW 2052, Australia; Discipline of Addiction Medicine, University of Sydney, Australia.

出版信息

J Subst Abuse Treat. 2017 May;76:43-48. doi: 10.1016/j.jsat.2017.01.009. Epub 2017 Feb 2.

DOI:10.1016/j.jsat.2017.01.009

PMID:28162849

Abstract

UNLABELLED

Previous studies have shown brief online self-help interventions to be a useful method of treating cannabis use and related problems; however, no studies have compared the effects of brief versus extended feedback for online brief intervention programs.

OBJECTIVES

The current study was a two arm randomised trial aimed at testing the short term effectiveness of a brief and extended feedback version of Grassessment, a brief online intervention for cannabis users that provides individualised feedback regarding use, motives, and harms.

METHODS

Participants (n=287) reporting at least one symptom of DSM IV cannabis abuse or dependence were recruited using online and offline advertising methods. Participants were randomised to receive either a brief or extended feedback version of the Grassessment program and were required to complete a one month follow up questionnaire.

RESULTS

One hundred and ninety four participants completed the one month follow up. Wilcoxon analyses showed a significant decrease in past month quantity and frequency of cannabis use (ps<0.001; r=-0.41 and -0.40 respectively) and lower severity of dependence scores (p=0.002; r=-0.31) among those in the brief feedback condition. Participants in the extended feedback group also demonstrated significant decreases in patterns of use (ps<0.002; r=-0.39 and -0.33) but not severity of dependence (p=0.09; r=0.18). A Generalized Estimating Equation (GEE) analysis showed no significant interaction between length of feedback received and past month cannabis use frequency (p=0.78), quantity (p=0.73), or severity of dependence (p=0.47).

CONCLUSION

This study adds support for the use of brief online self-complete interventions to reduce cannabis use and related problems in the short term. The findings suggest that in the case of the brief online screening and feedback program Grassessment, extended feedback does not lead to superior outcomes over brief feedback.

摘要

未标注

以往研究表明，简短的在线自助干预是治疗大麻使用及相关问题的一种有效方法；然而，尚无研究比较在线简短干预项目中简短反馈与扩展反馈的效果。

目的

本研究是一项双臂随机试验，旨在测试Grassessment简短反馈版和扩展反馈版的短期有效性，Grassessment是一项针对大麻使用者的简短在线干预，提供关于使用情况、动机和危害的个性化反馈。

方法

通过线上和线下广告招募报告至少一种DSM-IV大麻滥用或依赖症状的参与者（n = 287）。参与者被随机分配接受Grassessment项目的简短反馈版或扩展反馈版，并被要求完成一份为期一个月的随访问卷。

结果

194名参与者完成了为期一个月的随访。Wilcoxon分析显示，简短反馈组参与者过去一个月大麻使用量和频率显著下降（p值均<0.001；r分别为-0.41和-0.40），依赖得分严重程度降低（p = 0.002；r = -0.31）。扩展反馈组参与者的使用模式也显著下降（p值均<0.002；r分别为-0.39和-0.33），但依赖严重程度未下降（p = 0.09；r = 0.18）。广义估计方程（GEE）分析显示，所接受反馈的长度与过去一个月大麻使用频率（p = 0.78）、使用量（p = 0.73）或依赖严重程度（p = 0.47）之间无显著交互作用。