Skip to main content
OpenTrials
Not Yet Recruiting

NCT Number: NCT07038317

A Text Messaging Trial to Test Vaping Health Messages Optimized to Young Adults' Vaping Status

The goal of this study is to examine if e-cigarette education messages delivered using a source and presentation tailored to one's vaping status influences young adults' vaping behaviors. The main questions it aims to answer are:

1. Does receiving e-cigarette education messages presented using a source (expert or peer) and sidedness (one or two-sided) optimized for the current vaper group influence vaping cessation among young adults who vape daily? 2. Does receiving e-cigarette education messages presented using a source (expert or peer) and sidedness (one or two-sided) optimized for the non-vaper group influence vaping initiation among young adults who are susceptible to vaping? Participants will be randomly assigned to either the treatment (receiving messages tailored to one's vaping status) or the control (receiving non-tobacco messages) condition and receive SMS three times per week over the course of 6 months. They will complete self-report assessment and show salivary cotinine results for nicotine testing at 4 timepoints.

Not Yet Recruiting

Trial opening soon.

Get Notified

Key information

Conditions

Vaping Behaviors Message Exposure Young Adults

Age range

18 year–24 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Hawaii Cancer Center

Honolulu, Hawaii, 96822, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 18-24 years old
  • Fluent in English
  • Not currently using tobacco products other than e-cigarettes at the time of enrollment
  • Have a mobile phone to send and receive text messages

Exclusion criteria

  • Age below 18 or above 24
  • Not being fluent in English
  • Currently using tobacco products other than e-cigarettes
  • Not having a mobile phone

Treatment and study plan

Intervention

Other

Intervention involves e-cigarette education messages tailored to participants' vaping status that will be sent out in SMS via text messaging three times per week over the course of 6 months.

Control

Other

Participants will receive non-tobacco messages (messages about sun safety) three times per week over the course of 6 months.

Primary outcomes

  1. Self-reported vaping

    Time frame: Baseline, six-month

    Past-30-day vaping (yes/no) will be assessed

  2. Biochemical confirmation of vaping

    Time frame: Baseline, one-month, three-month, six-month

    Salivary cotinine for nicotine testing

Secondary outcomes

  1. Harm perceptions

    Time frame: Baseline, one-month, three-month, six-month

    Participants will be asked to indicate the extent to which they think vaping nicotine (using e-cigarettes) is… safe, containing flavors that are safe to use, containing dangerous chemical, harmful to health on a scale from 1 (strongly disagree) to 5 (strongly agree).

  2. Message perceptions

    Time frame: One-month, three-month, six-month

    Participants will be asked to indicate the extent to which they think the message was worth remembering, grabbed their attention, powerful, convincing, meaningful on a scale from 1 (strongly disagree) to 5 (strongly agree).

  3. Message liking

    Time frame: One-month, three-month, six-month

    Participants will be asked to indicate the extent to which they liked the message they saw on a scale from 1 (dislike very much) to 5 (like very much).

  4. Number of days of past-30-day e-cigarette use

    Time frame: From enrollment to the end of study at 24 weeks.

    Participants will be asked to report the number of days in the past 30 days (between 0 to 30) they used an e-cigarette.

  5. E-cigarette accessibility

    Time frame: Baseline, one-month, three-month, six-month

    Participants will be assessed how they usually purchase e-cigarettes for themselves with categorical response options of…in person, from the Internet, by phone, don't buy their own. This question will only be asked if response indicates participants are between the ages of 18 and 20 AND have used e-cigarettes more than 0 days in the past 30 days.

Study contacts

Contact information is provided by the study sponsor or research team.

Donghee N Lee, PhD

CONTACT

[email protected]

808-441-8184

Sponsors and collaborators

Lead sponsor

University of Hawaii

Other

Collaborators

  • National Cancer Institute (NCI)

Registry information

Official study title

Identifying and Examining the Effects of Source and Presentation on Responses to Electronic Cigarette Public Education Messages in Young Adult Vapers and Non-vapers

Important dates

Study start
2026
Primary completion
2027
Study completion
2028
First posted
Jun 26, 2025
Registry last updated
Jun 12, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.