E-cigarette Social Media Marketing and Its Perceptions by Youth
17 juillet 2026 mis à jour par: Jennifer Unger, University of Southern California
Evolution of Influencer-driven E-cigarette Marketing on Social Media and Its Effect on E-cigarette Perceptions and Use Patterns Among Adolescents
The proposed study will conduct two randomized between-subject experiments among 6,000 adolescents (per each experiment) recruited nationwide to test the effects of audio-visual features of e-cigarette influencer marketing on perceptions of influencer credibility, e-cigarette harm perceptions, appeal, and susceptibility to e-cigarette use.
This protocol represent the first experiment.
Aperçu de l'étude
Statut
Pas encore de recrutement
Les conditions
Intervention / Traitement
Description détaillée
We will estimate the effects of visual features often used in e-cigarette influencer marketing on social media on perceptions of influencer credibility, harm perceptions, appeal and susceptibility to e-cigarette use among adolescents.
We will assess interaction of the perceived age of influencers (young-looking vs older-looking) with the following features of influencer marketing, using two survey-based experiments: Experiment 1 will assess the effects of theme or social context appeal, i.e., use of generally positively perceived lifestyle contexts (e.g., healthy lifestyle, entertainment) alongside e-cigarette marketing.
Type d'étude
Interventionnel
Inscription (Estimé)
6000
Phase
- N'est pas applicable
Contacts et emplacements
Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.
Coordonnées de l'étude
- Nom: Jennifer B Unger, PI, PhD
- Numéro de téléphone: (323) 442-7200
- E-mail: unger@usc.edu
Sauvegarde des contacts de l'étude
- Nom: Julia Vassey, PhD
- Numéro de téléphone: (323) 442-7200
- E-mail: vassey@usc.edu
Lieux d'étude
-
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California
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Los Angeles, California, États-Unis, 90032
- University of Southern California
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Contact:
- Jennifer Unger, PhD
- Numéro de téléphone: 3233330580
- E-mail: unger@usc.edu
-
-
Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
- Enfant
Accepte les volontaires sains
Non
La description
Inclusion Criteria:
- 14-17 years of age,
- English fluency,
Exclusion Criteria:
Not meeting the following criteria:
- 14-17 years of age,
- English fluency,
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Autre
- Répartition: Randomisé
- Modèle interventionnel: Affectation factorielle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: Experimental: Videos featuring young influencers promoting e-cigarettes alongside fitness
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring young influencers promoting e-cigarettes alongside entertainment
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring young influencers promoting e-cigarettes alongside fashion
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring young influencers promoting e-cigarettes alongside avatar
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring older influencers promoting e-cigarettes alongside fitness
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring older influencers promoting e-cigarettes alongside fashion
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring older influencers promoting e-cigarettes alongside avatar
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring young influencers promoting e-cigarettes alone
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Comparateur actif: Experimental: Videos featuring older influencers promoting e-cigarettes alone
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Comparateur placebo: Experimental: Videos featuring two neutral profiles of older influencers
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Comparateur placebo: Experimental: Videos featuring two neutral profiles of younger influencers
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
|
Expérimental: Experimental: Videos featuring older influencers promoting e-cigarettes alongside entertainment
|
Exposure to promotional e-cigarette videos where influencers' age appearance (manipulated via an AI-based age filter) and the situational context alongside e-cigarette promotion (manipulated by background settings) are systematically varied.
The videos will be embedded within an online survey platform, immediately preceding the outcome assessment.
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Harm Perceptions of e-cigarettes
Délai: Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
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.
|
Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
|
Perceived appeal of e-cigarettes
Délai: Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
Responses to the following questions: using e-cigarette is: not cool/cool, unattractive/attractive were assessed on the 7-point semantic differential scale with the word pairs anchored at each end.
The scale was adapted from prior research.
The items were combined (by summing all the non-missing values of the items) into one variable (α=0.94).
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Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
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Susceptibility to e-cigarette use
Délai: Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
Susceptibility to e-cigarette use was measured (among never-users of e-cigarettes), using the validated three-item scale (indicating peer influence, intention, and curiosity about e-cigarette use) adapted from 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.
|
Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
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Perceived influencer credibility
Délai: Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
Perceived 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.
|
Assessed 10 times immediately after each of the 10 videos during the 15-minute-long survey-based experiment
|
Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Parrainer
Collaborateurs
Les enquêteurs
- Chercheur principal: Jennifer B Unger, PhD, University of Southern California
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude (Estimé)
1 janvier 2027
Achèvement primaire (Estimé)
30 décembre 2028
Achèvement de l'étude (Estimé)
30 décembre 2030
Dates d'inscription aux études
Première soumission
3 juillet 2026
Première soumission répondant aux critères de contrôle qualité
3 juillet 2026
Première publication (Réel)
10 juillet 2026
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
20 juillet 2026
Dernière mise à jour soumise répondant aux critères de contrôle qualité
17 juillet 2026
Dernière vérification
1 juillet 2026
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 1R01CA300653-01A1
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
NON
Description du régime IPD
survey is anonymous.
Data will be publicly available on GitHub repository if manuscripts related to this study are accepted for publication
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Non
Étudie un produit d'appareil réglementé par la FDA américaine
Non
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .