Department of Psychology, University of Wyoming, Laramie, Wyoming, USA.
Department of Psychology, University of Wisconsin, Stevens Point, Wisconsin, USA.
Subst Use Misuse. 2023;58(8):989-995. doi: 10.1080/10826084.2023.2201842. Epub 2023 Apr 19.
: Concurrent alcohol and cannabis (i.e. marijuana) use (CAM; use of both substances within the same specified time frame) is prevalent among college students and associated with increased risk of negative substance-related consequences. Extant research supports the use of protective behavioral strategies (PBS) for reducing negative consequences associated with both alcohol and cannabis use. However, limited research exists regarding the efficacy of PBS among CAM users, and it is unknown whether using PBS for both alcohol and cannabis augments protective effects. The present study tested four moderation models to evaluate the interactive effects of alcohol and cannabis PBS on alcohol and cannabis negative consequences and use frequency. : A multisite sample of college students ( = 1705) reporting past-month CAM use completed questionnaires regarding substance use behaviors, PBS use, and substance-related negative consequences. : Alcohol and cannabis PBS were negatively associated with alcohol and cannabis use, respectively. However, two-way interactions between PBS on substance use were not supported, such that negative associations between PBS and same-substance use were not augmented as other-substance PBS use increased. Interactive effects of alcohol and cannabis PBS on negative alcohol and cannabis consequences were supported, such that negative associations between alcohol PBS and consequences were augmented as cannabis PBS increased and vice versa. : Findings suggest that using both types of PBS may increase protective effects against negative consequences among CAM users. Accordingly, promoting both types of PBS may enhance extant harm reduction interventions.
同时使用酒精和大麻（即在同一规定时间内同时使用两种物质）在大学生中很常见，并且与负面物质相关后果的风险增加有关。现有研究支持使用保护性行为策略（PBS）来减少与酒精和大麻使用相关的负面后果。然而，关于 CAM 用户使用 PBS 的功效的研究有限，并且尚不清楚同时使用 PBS 对酒精和大麻是否会增强保护作用。本研究测试了四个调节模型，以评估酒精和大麻 PBS 对酒精和大麻负面后果和使用频率的交互影响。
一个多地点的大学生样本（n=1705）报告了过去一个月的同时使用酒精和大麻的情况，他们完成了关于物质使用行为、PBS 使用和物质相关负面后果的问卷。
酒精和大麻 PBS 分别与酒精和大麻使用呈负相关。然而，PBS 对物质使用的双向相互作用并未得到支持，因此，随着其他物质 PBS 使用的增加，PBS 与同物质使用之间的负面关联并没有增强。酒精和大麻 PBS 对负面酒精和大麻后果的交互作用得到了支持，因此，随着大麻 PBS 的增加，酒精 PBS 与后果之间的负面关联也会增强，反之亦然。
研究结果表明，同时使用这两种类型的 PBS 可能会增加 CAM 用户对负面后果的保护作用。因此，推广这两种类型的 PBS 可能会增强现有的减少伤害干预措施。
