a Steve Hicks School of Social Work , University of Texas at Austin , Austin , TX, USA.
Am J Drug Alcohol Abuse. 2018;44(6):642-652. doi: 10.1080/00952990.2018.1461879. Epub 2018 May 3.
Despite increasing marijuana use rates over the past decade, the longitudinal association between marijuana use and other substance use problems among adults is unclear.
To examine associations of self-reported changes in marijuana use and marijuana use frequency with self-reported other substance use problems over a 12-month period.
Two waves (W1 and W2) of the Population Assessment of Tobacco and Health Study provided data. The study sample (N = 26,204, female = 13,261; male = 12,943, aged 18+) included W1-W2 never marijuana users, W1-W2 ex-users (used prior to 12 months of W1), and those who either quit, initiated, resumed, or continued marijuana use between W1 and W2. We used multinomial and binary logistic regression analyses.
The past-year marijuana use rate was 12.4% at W2. A quarter of W1 users quit using marijuana in the 12 months preceding their W2 interview, and one-third of all the W2 users were new/resumed users since W1. Compared to W1-W2 ex-users, W2 quitters were more likely to report alcohol use problems and tobacco addiction at W2. Compared to quitters, continued users were more likely to report alcohol use problems (RRR = 1.62, 95% CI = 1.27-2.07) and tobacco addiction (RRR = 1.37, 95% CI = 1.11-1.69). New users (RRR = 2.05, 95% CI = 1.12-3.74), resumed users (RRR = 2.69, 95% CI = 1.55-4.70), and continued users (RRR = 3.40, 95% CI = 2.08-5.55) reported more drug use problems. Compared to less frequent marijuana users, frequent users had greater odds of reporting alcohol use problems (RRR = 1.44, 95% CI = 1.21-1.72) and drug use problems (OR = 1.63, 95% CI = 1.19-2.23).
Given increased prevalence of marijuana use, polysubstance use problems among marijuana users should be assessed.
尽管过去十年大麻使用率不断上升，但大麻使用与成年人其他物质使用问题之间的纵向关联尚不清楚。
在 12 个月的时间内，检查自我报告的大麻使用变化和大麻使用频率与自我报告的其他物质使用问题之间的关联。
人口烟草和健康评估研究的两个波次（W1 和 W2）提供了数据。研究样本（N=26204，女性=13261；男性=12943，年龄 18+）包括 W1-W2 从未使用过大麻的人群、W1-W2 前使用者（在 W1 之前的 12 个月内使用过），以及那些在 W1 和 W2 之间戒断、开始、恢复或继续使用大麻的人群。我们使用多项和二元逻辑回归分析。
W2 时的过去一年大麻使用率为 12.4%。四分之一的 W1 使用者在 W2 访谈前的 12 个月内戒断了大麻使用，而所有 W2 使用者中有三分之一是新/恢复使用者。与 W1-W2 前使用者相比，W2 戒断者更有可能在 W2 时报告酒精使用问题和烟草成瘾。与戒断者相比，持续使用者更有可能报告酒精使用问题（RRR=1.62，95%CI=1.27-2.07）和烟草成瘾（RRR=1.37，95%CI=1.11-1.69）。新使用者（RRR=2.05，95%CI=1.12-3.74）、恢复使用者（RRR=2.69，95%CI=1.55-4.70）和持续使用者（RRR=3.40，95%CI=2.08-5.55）报告了更多的药物使用问题。与较少频率的大麻使用者相比，频繁使用者报告酒精使用问题（RRR=1.44，95%CI=1.21-1.72）和药物使用问题（OR=1.63，95%CI=1.19-2.23）的可能性更大。
鉴于大麻使用率的增加，应评估大麻使用者中的多物质使用问题。
