a Virginia Commonwealth University, Department of Psychology , Center for the Study of Tobacco Products , Richmond , Virginia , USA.
b Moffitt Cancer Center , Department of Health Outcomes and Behavior , Tampa , Florida , USA.
Subst Use Misuse. 2018 Dec 6;53(14):2310-2319. doi: 10.1080/10826084.2018.1473437. Epub 2018 Jul 2.
Cannabis use is more common among tobacco users than nonusers, and co-use (i.e., use of both substances individually) may be increasing. Better understanding of patterns and correlates of co-use is needed. The current study aimed to compare rates and correlates of tobacco and cannabis co-use by tobacco product among youth.
High school students who completed the 2013 Virginia Youth Survey and reported past 30-day tobacco use (cigarette, smokeless tobacco, cigar) were included (n = 1390). Prevalence of past 30-day tobacco-only and cannabis co-use was calculated. Demographic, tobacco, and other substance use characteristics were compared by co-use status. Multivariate logistic regression models examined correlates of co-use overall and by tobacco product.
Over half of tobacco users were co-users. Poly-tobacco use, particularly combusted tobacco, was more prevalent among co-users. Past 30-day alcohol use and lifetime other illegal drug use/prescription drug misuse were common correlates of co-use. Black Non-Hispanic (NH) race/ethnicity was associated with co-use when restricted to cigarette users. "Other" race/ethnicity was associated with co-use in the overall model and when restricted to cigar users. Past 30-day cigarette smoking was associated with co-use in all models except among cigar smoking co-users. Conclusions/Importance: Rates and correlates of tobacco and cannabis co-use were not uniform and differed by tobacco product type. Tobacco and cannabis co-users may be at greater risk for negative health effects associated with inhaled tobacco and other risky substance use. The efficacy of prevention efforts may be improved if risk factors associated with product-specific co-use are considered.
与非使用者相比，烟草使用者中更常见大麻使用者，且联合使用（即分别使用两种物质）的情况可能正在增加。因此，需要更好地了解联合使用的模式和相关因素。本研究旨在比较青少年中不同烟草制品的烟草和大麻联合使用的比率和相关因素。
纳入了完成 2013 年弗吉尼亚青少年调查并报告过去 30 天内使用烟草（香烟、无烟烟草、雪茄）的高中生（n=1390）。计算了过去 30 天内仅使用烟草和大麻联合使用的流行率。按联合使用状况比较了人口统计学、烟草和其他物质使用特征。多变量逻辑回归模型总体上和按烟草制品分别检查了联合使用的相关因素。
超过一半的烟草使用者是联合使用者。多烟草制品使用，特别是可燃烟草制品，在联合使用者中更为普遍。过去 30 天内饮酒和终生其他非法药物使用/处方药物滥用是联合使用的常见相关因素。在仅限制于香烟使用者的情况下，黑人非西班牙裔（NH）种族/民族与联合使用有关。“其他”种族/民族与总体模型和仅限于雪茄使用者的模型中的联合使用有关。过去 30 天内的吸烟与除雪茄吸烟的联合使用者外的所有模型中的联合使用有关。
结论/重要性：烟草和大麻联合使用的比率和相关因素不一致，且因烟草制品类型而异。烟草和大麻联合使用者可能面临与吸入烟草和其他危险物质使用相关的负面健康影响的风险更大。如果考虑与特定产品联合使用相关的风险因素，预防工作的效果可能会提高。
