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NCT07420842 · ClinicalTrials.gov registry record · NA
Influencer Marketing and Adolescent E-cigarette Use
A NA study, sponsored by University of Southern California.
- Completed
- Registry status
- NA
- Development phase
- 700
- Enrollment target
NCT07420842: Completed NA study, sponsored by University of Southern California.
NCT07420842 is a NA study that has completed, run by University of Southern California. The registered enrollment target is 700 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (50% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT07420842, a NA study, has completed, sponsored by University of Southern California.
- COMPLETED
- Registry status
- NA
- Development phase
- 700 participants
- Enrollment target
Study Summary
Adolescents (N = 700) participated in the online survey-based randomized experiment focused on understanding youth perceptions of e-cigarette influencer marketing on social media. Specifically, the study assessed how age appearance of social media influencers, fitness-related contextual framing of e-cigarette content, and perceived influencer credibility jointly shape adolescent harm perceptions, appeal, and susceptibility to e-cigarette use. Participants were randomly shown 6 videos, featuring younger- or older-looking influencers promoting e-cigarettes in the following experimental conditions: 1) younger-looking influencers promoting e-cigarettes alongside fitness-oriented activities (condition 1); 2) older-looking influencers promoting e-cigarettes alongside fitness-oriented activities (condition 2); 3) younger-looking influencers promoting e-cigarettes without any fitness-oriented content; and 4) older-looking influencers promoting e-cigarettes without any fitness-oriented content (control). After watching each video, participants rated perceptions of influencer credibility (i.e., honesty, trustworthiness, knowledge) on the scale of 0 (e.g., dishonest) to 100 (honest). Among all participants, harm perceptions and appeal of e-cigarettes was also assessed. Susceptibility to use e-cigarettes was assessed among never users of e-cigarettes.
Primary Outcome
Responses to one question adapted from PATH, "Based on the videos you just watched, do you think using e-cigarettes for vaping nicotine is harmful to your health?" The outcome was assessed on the 5-point ordinal scale with the following response choices: Not at all harmful, slightly harmful, somewhat harmful, very harmful, extremely harmful.
Interventions
- OTHER Youth Perceptions of Influencer Age and Fitness Contexts in E-Cigarette Marketing
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 700 participants |
| Start Date | 2025-07-16 |
| Est. Completion | 2025-08-01 |
| Phase | NA |
What the finished NCT07420842 record still lists
NCT07420842 is an interventional study that assigns participants to a tested intervention. The registered 700 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (50% lower).
The record links to 0 conditions, and to 1 intervention - of which Youth Perceptions of Influencer Age and Fitness Contexts in E-Cigarette Marketing is the first listed.
NCT07420842 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT07420842 about?
NCT07420842 is a clinical study titled "Influencer Marketing and Adolescent E-cigarette Use". Adolescents (N = 700) participated in the online survey-based randomized experiment focused on understanding youth perceptions of e-cigarette influencer marketing on social media. Specifically, the study assessed how age appearance of social media influencers, fitness-related contextual framing of e...
What is the current status of trial NCT07420842?
This trial is currently completed. It is a NA study. The enrollment target is 700 participants. The study started on 2025-07-16. Estimated completion is 2025-08-01.
What interventions are being tested in trial NCT07420842?
The interventions under investigation include: Youth Perceptions of Influencer Age and Fitness Contexts in E-Cigarette Marketing (OTHER).
Who is sponsoring clinical trial NCT07420842?
This trial is sponsored by University of Southern California, which has 617 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT07420842's enrollment target sits among peer trials
700 149th of 2000 higher than 1,850 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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