An interventional study of Intervention and Control in Vaping Behaviors, Message Exposure and Young Adults, sponsored by University of Hawaii. Enrolling by invitation at 1 site in United States. Open to participants aged 18 Years to 24 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-10-07.
Sponsored by University of Hawaii · Not applicable, Interventional, and Prevention
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:
402 studies on the registry are indexed under Vaping; 95 are open to participants now.
This study's planned enrollment of 120 is above the median of 79 across 322 interventional studies indexed under Vaping.
Browse Vaping studies →University of Hawaii is the lead sponsor of 97 studies on the registry; 21 are open to participants now.
Of its 8 completed or terminated interventional studies of FDA-regulated products, 4 (50%) have results posted.
Compared within Vaping, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Behavior. The counts are of registry records indexed under each term, refreshed daily. How we classify →
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Participants in the treatment arm will receive e-cigarette education messages with source and sidedness optimized to one's vaping status.
Other: Intervention
Participants in the control arm will receive messages about sun safety.
Other: Control
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.
Participants will receive non-tobacco messages (messages about sun safety) three times per week over the course of 6 months.
Self-reported vaping
Past-30-day vaping (yes/no) will be assessed
Time frame: Baseline, six-month
Biochemical confirmation of vaping
Salivary cotinine for nicotine testing
Time frame: Baseline, one-month, three-month, six-month
Harm perceptions
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).
Time frame: Baseline, one-month, three-month, six-month
Message perceptions
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).
Time frame: One-month, three-month, six-month
Message liking
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).
Time frame: One-month, three-month, six-month
Number of days of past-30-day e-cigarette use
Participants will be asked to report the number of days in the past 30 days (between 0 to 30) they used an e-cigarette.
Time frame: From enrollment to the end of study at 24 weeks.
E-cigarette accessibility
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.
Time frame: Baseline, one-month, three-month, six-month
Plan to share: Yes — De-identified participants dataset will be shared.
Supporting information: Study protocol, Informed consent form
Time frame: One year after the completion of study
No publications or documents are linked to this record.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
No contact was published for this record. The registry link below has the sponsor’s details.
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University of Hawaii