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An Online Intervention to Reduce E-cigarette Use and Susceptibility to Smoking in Young Adults

Development of An Online, Theory-Based Intervention to Reduce E-cigarette Use and Susceptibility to Smoking in Young Adults: A Pilot Study

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06129123
Enrollment
105
Registered
2023-11-13
Start date
2025-07-01
Completion date
2026-01-23
Last updated
2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

E-cigarette Use

Brief summary

The goal of this intervention development and pilot clinical trial is to determine whether receiving the brief online intervention results in greater reductions in past 7-day e-cigarette use frequency and smoking susceptibility over an 8-week period compared to receiving the control condition in young adults who currently use e-cigarettes. Participants in the experimental condition will be asked to complete the 30-minute mobile-based program. Participants in the assessment-only control will be given the option to access the intervention after they complete their final survey at 8 weeks. All participants will complete our online surveys at baseline as well as 2-weeks, 4-weeks, and 8-weeks post-randomization. Researchers will compare outcomes among the intervention and control groups to determine the efficacy of the intervention.

Interventions

BEHAVIORALLive Free From E-cigarettes

This is a 30-minute online educational program that focuses on providing information about e-cigarette and smoking social norms, harms of e-cigarettes and cigarettes, and ways to quit or reduce using e-cigarettes.

Sponsors

University of Southern California
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
ALL
Age
18 Years to 24 Years
Healthy volunteers
Yes

Inclusion criteria

* be between the ages of 18 to 24 * be able to read English * report vaping at least one day per week in the past month * report no history of cigarette use at screening and baseline.

Exclusion criteria

* reporting severe mental health, illicit drug use, or alcohol use disorder * currently receiving nicotine cessation services

Design outcomes

Primary

MeasureTime frameDescription
E-cigarette Use8 weeksParticipants will report the number of (1) days they vaped, (2) times they picked up their device to vape per day, and (3) puffs they took before putting their vaping device away per day in the past 7 days and 30 days
Smoking Susceptibility8 weeks4-item Expanded Susceptibility to Smoking Index (ESSI)

Secondary

MeasureTime frameDescription
Perceived harms and benefits of vaping8 weeksUsing the 21-item Short Form Vaping Consequences Questionnaire (S-VSQ), participants will rate the likelihood that each consequence will occur when they vape.
Perceived harms and benefits of smoking8 weeksUsing the 21-item Short Form Smoking Consequences Questionnaire (S-SCQ), participants will rate the likelihood that each consequence will occur when they smoke.
Motivation to vape8 weeksParticipants will select which option best describes their interest in e-cigarette use: plan to stop (coded as 1), decrease (2), continue (3) or increase (4) vaping.
Motivation to smoke8 weeksParticipants will report if they plan to start smoking (yes/no).
Quitting vaping self-efficacy8 weeksParticipants rate their confidence about quitting vaping "someday" and "in the next 6 months" on a 5-point scale.
Vaping quit attempts8 weeksDuring follow-up assessments, participants will report on the number of times they have stopped vaping for one day or longer because they were trying to quit vaping.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORDenise D Tran, PhD

University of Southern California

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 2, 2026