Suzanne Dworak-Peck School of Social Work, University of Southern California.
RAND Corporation.
Psychol Addict Behav. 2023 Dec;37(8):996-1005. doi: 10.1037/adb0000921. Epub 2023 Apr 10.
To examine longitudinal associations between exposure to two types of advertisements (medical/recreational cannabis and e-cigarette retailers [vape shops]) and young adults' cannabis and nicotine vaping behavior. Positive and negative expectancies for cannabis and vaping nicotine were examined as mediators of these associations.
Secondary analysis of observational data from a longitudinal cohort of young adults recruited from Southern California (Wave 13: = 2,411, 56% female, = 23.6). Participants completed web-based surveys annually, reporting on advertising exposure in 2018, expectancies in 2019, and cannabis and nicotine vaping in 2020. Two path models were specified: (a) of past-month cannabis vaping only, nicotine vaping only, and co-use (vs. no vaping) and (b) of single product vaping (vs. co-use). Path analyses modeled direct and indirect associations between variables.
Controlling for past-month cannabis and nicotine use and other covariates, there were no significant direct associations of advertising exposure with cannabis and/or nicotine vaping. However, the association between cannabis advertising exposure and vaping (cannabis only) was significantly mediated by positive cannabis expectancies (β = 0.02, = 0.01, = .03). Among those who vaped cannabis and/or nicotine in the past month at Wave 13, expectancies did not significantly mediate associations between advertising exposure and single product use (vs. co-use).
Although exposure to cannabis advertisements may not be directly associated with young adults' cannabis vaping 2 years later, the effects of advertising exposure may be exerted indirectly by increasing positive beliefs about cannabis. Implications for public health policy are discussed. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
考察两种类型的广告（医用/娱乐性大麻和电子烟零售商[电子烟店]）暴露与年轻成年人大麻和尼古丁吸食行为之间的纵向关联。研究了对大麻和吸食尼古丁的积极和消极期望在这些关联中的中介作用。
对来自南加州的年轻成年人纵向队列的观察性数据进行二次分析（第 13 波：n=2411，56%为女性，平均年龄=23.6）。参与者每年通过网络调查报告 2018 年的广告暴露情况、2019 年的期望情况以及 2020 年的大麻和尼古丁吸食情况。指定了两个路径模型：（a）仅报告过去一个月的大麻吸食情况、尼古丁吸食情况和共同使用（与未吸食相比），以及（b）仅报告单一产品吸食情况（与共同使用相比）。路径分析模型对变量之间的直接和间接关联进行建模。
控制过去一个月的大麻和尼古丁使用情况以及其他协变量后，广告暴露与大麻和/或尼古丁吸食之间没有显著的直接关联。然而，大麻广告暴露与吸食大麻（仅吸食大麻）之间的关联显著受到积极的大麻期望的中介作用（β=0.02，SE=0.01，95%CI=.03）。在第 13 波时过去一个月既吸食大麻又吸食尼古丁或仅吸食尼古丁的人群中，期望在广告暴露与单一产品使用（与共同使用相比）之间没有显著的中介作用。
尽管接触大麻广告可能与年轻人两年后吸食大麻没有直接关联，但广告暴露的影响可能通过增加对大麻的积极信念而间接地发挥作用。讨论了对公共卫生政策的影响。（PsycInfo 数据库记录（c）2023 APA，保留所有权利）。
