Influencer E-Cigarette and Cannabis Marketing: a Survey-Based Experiment Among Adolescents
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 1,462
- 试验地点
- 1
- 主要终点
- Perceptions of influencer credibility
研究概览
简要总结
Adolescent non-users of e-cigarettes and cannabis (N = 1,462) participated in the in-class survey-based experiment. They were randomly shown 3 pairs of images featuring influencers promoting e-cigarettes alongside cannabis, (experimental group), or no-substance use or display (placebo treatment), or e-cigarette promotion alone (control). After viewing each pair of images, participants rated perceptions of influencer credibility (i.e., honesty, trustworthiness, knowledge) on the scale of 0 (e.g., dishonest) to 100 (honest).
Susceptibility to use e-cigarettes was assessed after participants viewed all the images. These outcomes were then compared among participants who perceived influencers as credible and those who perceived influencers as non-credible.
详细描述
Adolescents (13-17 years of age) living in California were recruited by Tobacco Center of Regulatory Science at the University of Southern California (USC TCORS) to participate in the ADVANCE survey cohort focused on tobacco-related attitudes and behaviors. Participants completed the experiment, which was part of the survey at cohort's Wave 7, on Chromebooks in classroom. All participants provided informed consent and parental assent prior to participating in the experiment. The study was approved by the University of Southern California Institutional Review Board (HS-19-00682-AM016). Respondents were randomly shown 3 pairs of images featuring influencers promoting e-cigarettes (image 1) paired with cannabis (image 2), (experimental group), or no-substance use or display (two images featuring neutral profiles of influencers), (placebo treatment), or e-cigarette promotion (image 1) paired with a neutral profile (with no e-cigarette) of the influencer featured in image 1 (control).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Factorial
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 16 Years 至 17 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •English fluency,
- •Current California resident.
排除标准
- •Not meeting these criteria:
- •English fluency,
- •Current California resident.
研究组 & 干预措施
Placebo group
Images featuring neutral profiles of influencers not using or displaying any substances
干预措施: Influencer marketing (Behavioral)
Control
Images featuring influencers promoting e-cigarettes alone
干预措施: Influencer marketing (Behavioral)
Experimental group
Images featuring influencers promoting e-cigarettes alongside cannabis
干预措施: Influencer marketing (Behavioral)
结局指标
主要结局
Perceptions of influencer credibility
时间窗: assessed during the ~ 30-minute experiment, immediately after each of the three pairs of influencer images
Perceptions of influencer credibility (i.e., honesty, trustworthiness, knowledge) were assessed using a 0 (e.g., dishonest) -100 (e.g., honest) scale that has been validated in prior research.
Susceptibility to use e-cigarettes
时间窗: one-time assessment after the experimental exposure (immediately post-treatment)
Susceptibility to use e-cigarettes was measured using the validated three-item scale adapted from Population Assessment of Tobacco and Health (PATH), and combined into one variable (α=0.93). Consistent with prior research, the measure was dichotomized with responses "definitely not" to all items being coded as "not susceptible" and responses "probably not," "probably yes", or "definitely yes" being coded as "susceptible."
次要结局
未报告次要终点
研究者
Jennifer Unger
Professor
University of Southern California