College of Health and Human Performance, Department of Health Education and Behavior, University of Florida, Gainesville, FL 32611, United States.
Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI 02903, United States.
J Subst Abuse Treat. 2017 Aug;79:53-60. doi: 10.1016/j.jsat.2017.05.015. Epub 2017 May 31.
Concurrent use of marijuana and alcohol among college students is highly prevalent and associated with negative consequences. It remains unclear whether marijuana use is influenced by or lessens the efficacy of alcohol interventions delivered within a stepped-care approach.
Participants were 530 college students who violated campus alcohol policy and were mandated to an alcohol-focused brief advice (BA) session. Participants who reported continued risky alcohol use (4+ heavy drinking episodes and/or 5+ alcohol-related consequences in the past month) six weeks following the BA session were randomized to a brief motivational intervention (BMI; n=211) or assessment only (AO; n=194) condition. Follow-up assessments were conducted 3, 6, and 9months' post-intervention.
Multiple regression analyses revealed that marijuana user status did not influence drinking outcomes following the BA session. However, hierarchical linear models suggested that marijuana users who were randomized to BMI or AO reported higher levels of binge drinking, pBAC and consequences compared to non-users, regardless of condition. Despite this, heavy drinking marijuana users and nonusers had equivalent reductions on alcohol use outcomes following the BMI sessions. Marijuana users who received a BMI did not significantly reduce marijuana use frequency compared to participants in the AO group.
Use of marijuana did not lessen the efficacy of the BA session on alcohol use or consequences. Findings suggest that marijuana users respond similarly to alcohol interventions as do non-users and can benefit from brief or more intensive alcohol interventions. A marijuana-focused intervention may be warranted to facilitate changes in marijuana use.
大学生同时使用大麻和酒精的现象非常普遍，并且与负面后果有关。目前尚不清楚大麻的使用是否会影响或降低在阶梯式护理方法中提供的酒精干预措施的效果。
参与者为 530 名违反校园酒精政策并被强制参加酒精重点简短咨询（BA）会议的大学生。在 BA 会议后六周报告持续存在危险饮酒行为（过去一个月内有 4 次以上重度饮酒事件和/或 5 次以上与酒精相关的后果）的参与者被随机分配到简短动机干预（BMI；n=211）或仅评估（AO；n=194）条件。在干预后 3、6 和 9 个月进行随访评估。
多元回归分析显示，BA 会议后大麻使用者的饮酒结果不受影响。然而，分层线性模型表明，随机分配到 BMI 或 AO 的大麻使用者报告的 binge 饮酒、pBAC 和后果水平高于非使用者，无论条件如何。尽管如此，重度饮酒的大麻使用者和非使用者在 BMI 会议后对酒精使用结果的减少程度相同。接受 BMI 的大麻使用者与接受 AO 组的参与者相比，大麻使用频率没有显著降低。
大麻的使用并没有降低 BA 会议对酒精使用或后果的效果。研究结果表明，大麻使用者对酒精干预的反应与非使用者相似，可以从简短或更强化的酒精干预中受益。可能需要针对大麻使用的干预措施来促进大麻使用的改变。
