The Edna Bennett Pierce Prevention Research Center, College of Health and Human Development, The Pennsylvania State University, 314 Biobehavioral Health, University Park, PA 16802, USA.
The University of Washington, Department of Psychiatry and Behavioral Sciences, 1100 NE 45th Street, Suite 300, Box 354944, Seattle, WA 98105, USA.
Drug Alcohol Depend. 2022 Jan 1;230:109205. doi: 10.1016/j.drugalcdep.2021.109205. Epub 2021 Dec 1.
Subjective ratings of cannabis effects are important predictors of use-related consequences. However, psychometric research is fairly limited, particularly for measures to capture variability in daily life when diverse modes of cannabis administration and co-substance use are common.
This study evaluated the predictive utility of a revised item to assess perceived cannabis effects and examined modes of cannabis administration and alcohol and nicotine co-use as moderators. Participants were 106 young adults (18-25 years; 51% female) who completed up to 14 consecutive daily reports of substance use (n = 1405 person-days). Two measures of subjective effects were examined: a standard item (0-100 rating of "how high do you feel?") and a revised item that uses four crowd-sourced anchor points ranging from relaxed (0), calm/chill (33), high (67), and stoned/baked (100). The items shared substantial variance (Pseudo-R = 59.5%), however, the revised item showed greater within-person variability (77.0% vs. 68.8%) and stronger day-level associations with consumption levels (Pseudo-R = 25.0% vs. 16.7%).
The cannabis consumption-subjective effects link was weaker on blunt-only days compared to vape-only days. Subjective cannabis effects were higher on nicotine co-use days after controlling for cannabis consumption; neither alcohol nor nicotine co-use moderated the cannabis consumption-subjective effects link.
The revised subjective cannabis effects item is a viable alternative to the standard item among young adults who engage in simultaneous alcohol and cannabis use.
Future research focused on characterizing the variability in cannabis effects is needed.
对大麻影响的主观评价是使用相关后果的重要预测指标。然而，心理测量学研究相当有限，特别是对于捕捉日常生活中变异性的措施，因为大麻的多种给药方式和共物质使用很常见。
本研究评估了评估感知大麻效应的修订项目的预测效用，并研究了大麻给药方式以及酒精和尼古丁共使用作为调节因素。参与者是 106 名年轻成年人（18-25 岁；51%为女性），他们完成了多达 14 次连续的药物使用日常报告（n=1405 人天）。检查了两种主观效应测量方法：一种是标准项目（0-100 分评估“你感觉有多高？”），另一种是使用四个众包锚点的修订项目，范围从放松（0）、平静/冷静（33）、高（67）和石（100）。这些项目具有相当大的差异（伪 R=59.5%），但修订项目显示出更大的个体内变异性（77.0%对 68.8%）和更强的与消费水平的日水平关联（伪 R=25.0%对 16.7%）。
与仅吸食大麻相比，仅吸食大麻的日子里大麻消费-主观效应的联系较弱。在控制大麻消费后，尼古丁共使用的日子里，主观大麻效应更高；酒精和尼古丁共使用都没有调节大麻消费-主观效应的联系。
在同时使用酒精和大麻的年轻成年人中，修订后的主观大麻效应项目是标准项目的可行替代方案。
需要进行未来的研究，重点是描述大麻效应的变异性。
