Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.
J Adolesc Health. 2021 Jan;68(1):103-109. doi: 10.1016/j.jadohealth.2020.07.032. Epub 2020 Aug 20.
Prior studies of medicinal cannabis use (MCU) have focused primarily on adults. This study examined the prevalence and correlates of self-reported MCU among adolescents.
Secondary school students (grades 9-12; N = 3,221) completed a cross-sectional survey in classrooms across Ontario, Canada, in 2016-2017. Participants reported on cannabis use behavior, cannabis dependence, other drugs use, and general health and sleep. Participants reporting cannabis use in the past year were grouped based on whether they reported MCU or not (i.e., recreational cannabis use only [RCU-only]).
An estimated 6.89% (95% confidence interval 5.48%-8.63%) of students reported MCU, representing one quarter of the students reporting current cannabis use. Relative to the RCU-only group, the MCU group reported using cannabis more frequently, were more likely to report vaping and eating cannabis, had greater risk for cannabis dependence, perceived cannabis as less harmful, were more likely to report tobacco use, recreational use of other drugs, and medicinal use of sedatives or tranquilizers, and were less likely to report good health and sleeping for seven or more hours per night. Frequency of cannabis use accounted for differences between MCU and RCU-only groups in cannabis dependence risk, recreational use of other drugs, and perceiving cannabis as harmful, but it did not account for the other differences.
A sizable portion of secondary school students report MCU, which appears to be associated with more frequent cannabis use and certain substance use and health-related correlates. Research is needed to further characterize motives for self-reported MCU among adolescents.
先前关于药用大麻使用（MCU）的研究主要集中在成年人上。本研究考察了青少年自我报告的 MCU 的流行率和相关因素。
2016-2017 年，在加拿大安大略省的课堂上，对来自 9-12 年级的中学生（N=3221）进行了横断面调查。参与者报告了大麻使用行为、大麻依赖、其他药物使用以及一般健康和睡眠情况。根据他们是否报告 MCU（即仅使用娱乐性大麻[RCU]），将报告过去一年使用大麻的参与者分为两组。
估计有 6.89%（95%置信区间 5.48%-8.63%）的学生报告了 MCU，占报告当前大麻使用者的四分之一。与 RCU 组相比，MCU 组报告的大麻使用频率更高，更有可能报告吸食和食用大麻，大麻依赖风险更高，认为大麻的危害更小，更有可能报告吸烟、娱乐性使用其他药物以及镇静剂的医疗用途，更有可能报告健康状况不佳和每晚睡眠时间不足 7 小时。大麻使用频率解释了 MCU 组和 RCU 组在大麻依赖风险、娱乐性使用其他药物以及认为大麻有害方面的差异，但不能解释其他差异。
相当一部分中学生报告了 MCU，这似乎与更频繁的大麻使用以及某些物质使用和健康相关的因素有关。需要进一步研究青少年自我报告的 MCU 的动机。
