University of Texas at Austin Steve Hicks School of Social Work, Austin, TX, USA.
Aging Ment Health. 2021 Jun;25(6):1134-1142. doi: 10.1080/13607863.2020.1732292. Epub 2020 Mar 2.
To examine: (1) correlates of use-to-nonuse (use 13-24 months ago, but no past-year use), initiation/reinitiation (no use 13-24 months ago, but past-year use), and continued use over a 24-month period; and (2) associations of past-year marijuana use disorder with use/nonuse among older adults.
The 2015-2017 National Survey on Drug Use and Health provided data ( = 26,322 aged 50+). We used multinomial and binary logistic regression analyses to compare users-to-nonusers and initiators/reinitiators to continued users ( = 2304).
In the 50-64 age group, 2.1% were users-to-nonusers, 2.2% initiators/reinitiators, and 7.2% continued users. In the 65+ age group, the corresponding percentages were 0.7%, 0.7%, and 2.4%. Residence in states with medical marijuana laws, nicotine dependence, and other illicit drug use were associated with a lower likelihood of use-to-nonuse than continued use. Alcohol use disorder was associated with a higher likelihood of initiation/reinitiation. Parole/probation status was associated with higher likelihood of use-to-nonuse. Moderate/great marijuana risk perceptions were associated with a higher likelihood of both use-to-nonuse and initiation/reinitiation. The odds of marijuana use disorder did not differ between continued users and initiators/reinitiators or between medical and recreational users.
Most older users continued using over 24 months. Substantial numbers had marijuana and other substance use problems that require treatment.
考察：（1）使用-非使用（13-24 个月前使用，但过去一年未使用）、开始/重新开始（13-24 个月前未使用，但过去一年使用）和 24 个月期间持续使用的相关因素；以及（2）过去一年大麻使用障碍与老年人使用/不使用之间的关联。
2015-2017 年全国毒品使用与健康调查提供了数据（ = 26322 名 50 岁及以上人群）。我们使用多项和二项逻辑回归分析比较了使用者和非使用者以及开始使用者和重新开始使用者与持续使用者（ = 2304）。
在 50-64 岁年龄组中，2.1%为使用-非使用者，2.2%为开始/重新开始使用者，7.2%为持续使用者。在 65 岁及以上年龄组中，相应的百分比分别为 0.7%、0.7%和 2.4%。居住在有医用大麻法律的州、尼古丁依赖和其他非法药物使用与持续使用相比，不太可能出现使用-非使用情况。酒精使用障碍与重新开始使用的可能性增加有关。假释/缓刑状况与使用-非使用的可能性增加有关。中度/高度大麻风险认知与使用-非使用和重新开始使用的可能性增加有关。大麻使用障碍的几率在持续使用者和开始/重新开始使用者之间以及医用和娱乐性使用者之间没有差异。
大多数老年使用者在 24 个月以上持续使用。大量的人存在大麻和其他物质使用问题，需要治疗。
