Influencer E-Cigarette and Cannabis Marketing: a Survey-Based Experiment Among Adolescents

NCT ID: NCT06919263

Last Updated: 2025-04-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

1462 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-25

Study Completion Date

2023-11-30

Brief Summary

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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.

Detailed Description

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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).

Conditions

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Electronic Nicotine Delivery Systems

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Images featuring influencers promoting e-cigarettes alongside cannabis products
Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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Experimental group

Images featuring influencers promoting e-cigarettes alongside cannabis

Group Type ACTIVE_COMPARATOR

Influencer marketing

Intervention Type BEHAVIORAL

Participants viewed survey-imbedded promotional images featuring influencers

Placebo group

Images featuring neutral profiles of influencers not using or displaying any substances

Group Type ACTIVE_COMPARATOR

Influencer marketing

Intervention Type BEHAVIORAL

Participants viewed survey-imbedded promotional images featuring influencers

Control

Images featuring influencers promoting e-cigarettes alone

Group Type ACTIVE_COMPARATOR

Influencer marketing

Intervention Type BEHAVIORAL

Participants viewed survey-imbedded promotional images featuring influencers

Interventions

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Influencer marketing

Participants viewed survey-imbedded promotional images featuring influencers

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* English fluency,
* Current California resident.

Exclusion Criteria

Not meeting these criteria:

* English fluency,
* Current California resident.
Minimum Eligible Age

16 Years

Maximum Eligible Age

17 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Southern California

OTHER

Sponsor Role lead

Responsible Party

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Jennifer Unger

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Gina Klemm

Role: STUDY_DIRECTOR

University of Southern California

Locations

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University of Southern California

Los Angeles, California, United States

Site Status

Countries

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United States

Other Identifiers

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T33DT6620

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

HS-19-00682-AM016

Identifier Type: -

Identifier Source: org_study_id

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