Vaping BehaviorsNCT05714982
Impact of E-cigarette Device Warnings
A study testing Label with text health warning, Label with pictorial health warning and Label with neutral statements about vaping in people with Vaping Behaviors, run by UNC Lineberger Comprehensive Cancer Center at 1 site in United States.
Trial summary
The purpose of this randomized clinical trial is to determine whether e-cigarette warnings increase intentions to quit vaping without the unintended consequence of pushing users toward smoking. Read more about this study
- Who is it for?
- Ages 21 years and olderHealthy volunteers can take part
- Conditions the study is for
- Vaping Behaviors
- What is being tested?
- Label with text health warning, Label with pictorial health warning and Label with neutral statements about vaping
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 1,369 participants
- Where
- 1 siteUnited States
- Study dates
- 23 Feb 2023to 23 Jul 2024
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 21 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Be 21 years or older
- Currently vape every day or some days
- Use an e-cigarette that contains nicotine
- Be able to attend 2 in-person appointments
- Be able to bring in e-cigarette device and 2 weeks' worth or refills to 2 in-person appointments
- Be willing to let us apply a sticker to the device and refill materials
Show all 10Show fewer
- Be willing to use only the labeled e-cigarette during the study
- Be able to complete 3 surveys online at home
- Be able to read and speak English
- Be able to complete a survey on a computer without help
Who cannot join
- Pregnant people
- If e-cigarette device cannot be labeled
- Vapers concurrently enrolled in any research studies about vaping or using other tobacco products
- Vapers who live in the same household as someone who has enrolled in the study
Trial locations and contacts
1 site in 1 country.
United States1 site
Ewald & Wasserman Research Consultants, LLC
San Francisco, California, 94104
About this study
Official title: Randomized Clinical Trial Evaluating the Impact of E-cigarette Device Warnings
The purpose of this randomized clinical trial is to determine whether e-cigarette warnings increase intentions to quit vaping without the unintended consequence of pushing users toward smoking. This trial addresses these issues by evaluating the impact of e-cigarette warnings by randomly assigning vapers to have their devices and refills labeled with control messages, text warnings, or pictorial warnings. Participants will be US adult (ages 21+) vapers. The trial expects ~1,200 participants to complete Visits 1, 3, and 5.
Read the detailed description
This trial will assess the impact of e-cigarette warnings on vapers' devices and refills in a randomized clinical trial.
Recruitment: Vapers will first undergo screening online or call the study center to complete the screening survey over the phone. Trial staff will schedule eligible vapers for 2 in-person visits. For each of the 2 visits, vapers will be asked to bring the vapes and refill materials they plan to use over the next 2 weeks.
Informed Consent: Prior to consenting vapers, trial staff will visually inspect photo identification of vapers to confirm that they are 21 years or older. At the beginning of the first appointment, trial staff will explain the consent form and ask the vaper to read the form. Once the participant has finished reading the form, the trial staff member will ask the participant if he or she has any questions. Then both parties will sign the consent form and the participant will receive a copy of the consent form.
Randomization: At the first visit, trial staff will randomly assign participants to one of the three trial arms by using Qualtrics software. Vapers have an equal chance of being randomized to have labels with control, text, or pictorial warnings.
Assessment: Participants will attend 2 in-person appointments at the study office (at Visit 1 and Visit 3 that are spaced 2 weeks apart). The visits will last about 45-60 minutes. At Visit 1 participants will take a survey, have their vape device and refills labeled based on their trial arm, and take another survey. At Visit 3, participants take a survey and have their vape device and refills labeled based on their trial arm. Participants will also be e-mailed 3 more surveys to complete online at home (taken at Visit 2, 4, and 5). Thus participants will take 5 weekly surveys overall.
Detailed description of the intervention: At each in-person appointment, participants will bring in the vapes and refills they plan to use over the next 2 weeks for labeling. While participants are taking the survey, trial staff will label the devices and refills based on their trial arm.
Participants randomized to the text warning arm will have labels with information about the health harms of vaping applied to their vapes and refills. Participants randomized to the pictorial arm will have labels with pictorial images and text about the health harms of vaping. Participants assigned to the control arm will have labels with neutral statements about vaping. Each trial arm will have four labels (two labels for Visit 1 and two additional labels for Visit 3). Trial staff will return labeled vapes and refills in a clear plastic bag with the e-cigarette warning labels applied to a card. Trial investigators developed the text, images, and design of these labels.
The trial staff will instruct participants in all trial arms to vape or not vape as they normally would. At the end of the trial, participants will receive a link to more information about the risks of vaping and tobacco use.
- Conditions
- Vaping Behaviors
- Being tested
- Label with text health warning, Label with pictorial health warning, Label with neutral statements about vaping
- Keywords
- Vaping, Tobacco use, E-cigarette use
- Medical subject headings
- Vaping, Tobacco Use
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Label with text health warningOther
Labels with e-cigarette health warning that include text about health harms of vaping will be applied to participants' vaping devices and refills. At Visit 1, devices and refills will be labeled with 2 warnings based on their assigned trial arm; at Visit 3, they will get 2 additional warnings based on their assigned trial arm. The order of the 4 labels within this trial arm will be randomized using a Latin square design. Study investigators developed the text and design of these labels.
Label with pictorial health warningOther
Labels with e-cigarette health warning that include the same text about health harms of vaping and corresponding pictorial images will be applied to participants' vaping devices and refills. At Visit 1, devices and refills will be labeled with 2 warnings based on their assigned trial arm; at Visit 3, they will get 2 additional warnings based on their assigned trial arm. The order of the 4 labels within this trial arm will be randomized using a Latin square design. Study investigators developed the text and design of these labels.
Label with neutral statements about vapingOther
Labels with neutral statements about vaping will be applied to participants' vaping devices and refills. At Visit 1, devices and refills will be labeled with 2 statements based on their assigned trial arm; at Visit 3, they will get 2 additional statements based on their assigned trial arm. The order of the 4 labels within this trial arm will be randomized using a Latin square design. Study investigators developed the text and design of these labels.
| Study group | Role | What they receive |
|---|---|---|
| Label with text health warning | Experimental | Labels with e-cigarette health warning that include text about health harms of vaping will be applied to participants' vaping devices and refills. Receives: Other: Label with text health warning |
| Label with pictorial health warning | Experimental | Labels with e-cigarette health warning that include the same text about health harms of vaping and corresponding pictorial images will be applied to participants' vaping devices and refills. Receives: Other: Label with pictorial health warning |
| Label with neutral statements about vaping | Other | Labels with neutral statements about vaping will be applied to participants' vaping devices and refills. Receives: Other: Label with neutral statements about vaping |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean Vaping Quit Intentions Score
The primary outcome is vaping quit intentions measured by 3 survey items at 5 time points: post-labeling (Visit 1) and at 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating higher quit intentions.
Measured: Up to 4 weeks
Secondary outcomes (16)
Mean Knowledge Score
Knowledge of health harms from vaping will be measured by 5 survey items at 5 time points: post-labeling (Visit 1) and at 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will score each item for accuracy (correct or incorrect) and average the scores (% correct) for each time point and take an average across the time points. The range for this measure will be 0% to 100%, with higher values indicating more accurate knowledge).
Measured: Up to 4 weeks
Mean Cognitive Elaboration Score
Cognitive elaboration (thinking about the label) will be measured by 3 survey items at 4 time points: 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating more cognitive elaboration.
Measured: Up to 4 weeks
Mean Perceived Likelihood of Illness Score
Perceived likelihood of illness from vaping will be measured by 3 survey items at 5 time points: post-labeling (Visit 1) and at 1, 2, 3, and 4 weeks (Visit 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating higher perceived likelihood.
Measured: Up to 4 weeks
Mean Negative Affect Score
Negative affective reactions to the labels will be measured by 5 survey items at 5 time points: post-labeling (Visit 1) and at 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating more negative affect.
Measured: Up to 4 weeks
Mean Attention Score
Attention to the labels will be measured by 3 survey items at 4 time points: 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating greater attention.
Measured: Up to 4 weeks
Mean Information Seeking Score
Information seeking about the harms of vaping will be measured by 1 survey item at 4 time points: 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will score responses (0 times=0, 1-2 times=1.5, 3-5 times=4, 6+ times=6) and take an average across the time points. The range for this measure will be 0 times to 6 times), with higher values indicating more information seeking.
Measured: Up to 4 weeks
Mean Number of Conversations in Past Week
Number of conversations with others about the labels, health harms caused by vaping, and quitting vaping will be measured by 3 survey items at 4 time points: 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 0 times to 100 times, with higher values indicating more conversations.
Measured: Up to 4 weeks
Mean Vaping Reinforcement Attitudes Score
Positive vaping reinforcement attitudes will be measured by 3 survey items at 5 time points: post-labeling (Visit 1) and at 1, 2, 3, and 4 weeks (Visits 2-5). We will take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating more positive vaping reinforcement attitudes.
Measured: Up to 4 weeks
Mean Uncontrolled Vaping Score
Subjective uncontrolled vaping (vaping more than the user prefers) will be measured by 3 survey items at 4 time points: 1, 2, 3, and 4 weeks (Visit 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating vaping that is more uncontrolled.
Measured: Up to 4 weeks
Mean Number of Times Forgoing a Vape in Past Week
Number of times forgoing a vape in the last week will be measured by 4 survey items at 4 time points: 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will score responses (never=0, 1 time=1, 2 times=2, 3-5 times=4, 6+ times=6), average the items to create a score for each time point, and take an average across the time points. The range for this measure will be 0 times to 6 times, with higher values indicating more forgoing.
Measured: Up to 4 weeks
Percent of Participants Who Made a Vaping Quit Attempt in Past 4 Weeks
Made vaping quit attempt will be measured by 1 survey item (not vaping for 1 day or longer in the last week because they were trying to stop vaping) at 4 time points: 1, 2, 3, and 4 weeks (Visits 2-5). There will be an additional item (not vaping for 1 day or longer since the start of the study) at 4 weeks (Visit 5). Study investigators will score the items for any quit attempts: 0 (no quit attempts) or 1 (one or more quit attempt across the 4 weeks).
Measured: Up to 4 weeks
Percent of Participants Who Successfully Quit Vaping
Successful quitting of vaping during the trial will be measured by 1 survey item at 1 time point (participants' last survey, usually Visit 5). Study investigators will score the item for successful quitting: 0 (vaping on one or more of the last 7 days) or 1 (no vaping).
Measured: At 4 weeks
Mean Inaccurate Risk Perception Score
Inaccurate risk perception of vaping (believing vaping is the same or more harmful than smoking cigarettes) will be measured by 1 survey item at 5 time points: post-labeling (Visit 1) and 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will score the item for accuracy (vaping less harmful than smoking cigarettes=correct; other answers=incorrect) and take an average across the time points. The range for this measure will be 0% (no correct answers) to 100% (all correct answers), with higher values indicating more accurate risk perceptions.
Measured: Up to 4 weeks
Mean Stigma Score
Stigma (expecting the labels will cause social disapproval of vaping) will be measured by 3 survey items at 5 time points: post-labeling (Visit 1) and at 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating more stigma.
Measured: Up to 4 weeks
Mean Smoking Quit Intentions Score
Smoking quit intentions will be measured by 3 survey items at 5 time points: post-labeling (Visit 1) and 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The construct will be assessed only among cigarette smokers. The range for this measure will be 1 to 5, with higher values indicating higher intentions.
Measured: Up to 4 weeks
Percent of Participants Who Made a Smoking Quit Attempt in Past 4 Weeks
Made smoking quit attempt will be measured by 1 survey item (not smoking for 1 day or longer in the last week because they were trying to stop smoking) at 4 time points: 1, 2, 3, and 4 weeks (Visits 2-5). There will be an additional item (not smoking for 1 day or longer since the start of the study) at 4 weeks (Visit 5). Study investigators will score the items for any quit attempts: 0 (no quit attempts) or 1 (at least one quit attempt across the 4 weeks).
Measured: Up to 4 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Feb 2023
- Study start23 Feb 2023
- Primary completion23 Jul 2024
- Study completion23 Jul 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Vaping BehaviorsStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 1,369 participants (actual)
Sponsor and investigators
- Lead sponsor
- UNC Lineberger Comprehensive Cancer Center
- Sponsor type
- University, hospital or other
- Collaborators
- National Institute on Drug Abuse (NIDA)
- Responsible party
- Sponsor
- Investigators
- Noel Brewer, PhD, Principal investigator, University of North Carolina, Chapel Hill
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05714982
- Sponsor's protocol ID
- 21-0469
- Other IDs
- R01DA048390
- Status last verified
- Aug 2025
- First submitted
- 24 Jan 2023
- Last updated
- 12 Sep 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: The trial investigators will produce a de-identified dataset and codebook for sharing with external investigators, making use of the UNC Dataverse digital data repository (dataverse.unc.edu) hosted by the Odum Institute Data Archive.
Study at a glance
From the registry record, last updated by the sponsor on 12 Sep 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Randomized Clinical Trial Evaluating the Impact of E-cigarette Device Warnings
- ClinicalTrials.gov ID
- NCT05714982
- Acronym / sponsor ID
- 21-0469
- Conditions
- Vaping Behaviors
- Keywords
- Vaping, Tobacco use, E-cigarette use
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 1,369 participants (actual)
- Lead sponsor
- UNC Lineberger Comprehensive Cancer CenterUniversity, hospital or other
- Collaborators
- National Institute on Drug Abuse (NIDA)
- Study start
- 23 Feb 2023 (actual)
- Primary completion
- 23 Jul 2024 (actual)
- Study completion
- 23 Jul 2024 (actual)
- First posted
- 6 Feb 2023 (actual)
- Results
- Posted 12 Sep 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this randomized clinical trial is to determine whether e-cigarette warnings increase intentions to quit vaping without the unintended consequence of pushing users toward smoking. This trial addresses these issues by evaluating the impact of e-cigarette warnings by randomly assigning vapers to have their devices and refills labeled with control messages, text warnings, or pictorial warnings. Participants will be US adult (ages 21+) vapers. The trial expects ~1,200 participants to complete Visits 1, 3, and 5.
Detailed description
This trial will assess the impact of e-cigarette warnings on vapers' devices and refills in a randomized clinical trial.
Recruitment: Vapers will first undergo screening online or call the study center to complete the screening survey over the phone. Trial staff will schedule eligible vapers for 2 in-person visits. For each of the 2 visits, vapers will be asked to bring the vapes and refill materials they plan to use over the next 2 weeks.
Informed Consent: Prior to consenting vapers, trial staff will visually inspect photo identification of vapers to confirm that they are 21 years or older. At the beginning of the first appointment, trial staff will explain the consent form and ask the vaper to read the form. Once the participant has finished reading the form, the trial staff member will ask the participant if he or she has any questions. Then both parties will sign the consent form and the participant will receive a copy of the consent form.
Randomization: At the first visit, trial staff will randomly assign participants to one of the three trial arms by using Qualtrics software. Vapers have an equal chance of being randomized to have labels with control, text, or pictorial warnings.
Assessment: Participants will attend 2 in-person appointments at the study office (at Visit 1 and Visit 3 that are spaced 2 weeks apart). The visits will last about 45-60 minutes. At Visit 1 participants will take a survey, have their vape device and refills labeled based on their trial arm, and take another survey. At Visit 3, participants take a survey and have their vape device and refills labeled based on their trial arm. Participants will also be e-mailed 3 more surveys to complete online at home (taken at Visit 2, 4, and 5). Thus participants will take 5 weekly surveys overall.
Detailed description of the intervention: At each in-person appointment, participants will bring in the vapes and refills they plan to use over the next 2 weeks for labeling. While participants are taking the survey, trial staff will label the devices and refills based on their trial arm.
Participants randomized to the text warning arm will have labels with information about the health harms of vaping applied to their vapes and refills. Participants randomized to the pictorial arm will have labels with pictorial images and text about the health harms of vaping. Participants assigned to the control arm will have labels with neutral statements about vaping. Each trial arm will have four labels (two labels for Visit 1 and two additional labels for Visit 3). Trial staff will return labeled vapes and refills in a clear plastic bag with the e-cigarette warning labels applied to a card. Trial investigators developed the text, images, and design of these labels.
The trial staff will instruct participants in all trial arms to vape or not vape as they normally would. At the end of the trial, participants will receive a link to more information about the risks of vaping and tobacco use.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Label with text health warning | Experimental | Other: Label with text health warningLabels with e-cigarette health warning that include text about health harms of vaping will be applied to participants' vaping devices and refills. |
| Label with pictorial health warning | Experimental | Other: Label with pictorial health warningLabels with e-cigarette health warning that include the same text about health harms of vaping and corresponding pictorial images will be applied to participants' vaping devices and refills. |
| Label with neutral statements about vaping | Other | Other: Label with neutral statements about vapingLabels with neutral statements about vaping will be applied to participants' vaping devices and refills. |
Who may qualify
- Ages
- 21 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- Be 21 years or older
- Currently vape every day or some days
- Use an e-cigarette that contains nicotine
- Be able to attend 2 in-person appointments
- Be able to bring in e-cigarette device and 2 weeks' worth or refills to 2 in-person appointments
Key exclusion criteria (4 listed)
- Pregnant people
- If e-cigarette device cannot be labeled
- Vapers concurrently enrolled in any research studies about vaping or using other tobacco products
- Vapers who live in the same household as someone who has enrolled in the study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Label with text health warningLabels with e-cigarette health warning that include text about health harms of vaping will be applied to participants' vaping devices and refills. At Visit 1, devices and refills will be labeled with 2 warnings based on their assigned trial arm; at Visit 3, they will get 2 additional warnings based on their assigned trial arm. The order of the 4 labels within this trial arm will be randomized using a Latin square design. Study investigators developed the text and design of these labels. | Other | Label with text health warning |
| Label with pictorial health warningLabels with e-cigarette health warning that include the same text about health harms of vaping and corresponding pictorial images will be applied to participants' vaping devices and refills. At Visit 1, devices and refills will be labeled with 2 warnings based on their assigned trial arm; at Visit 3, they will get 2 additional warnings based on their assigned trial arm. The order of the 4 labels within this trial arm will be randomized using a Latin square design. Study investigators developed the text and design of these labels. | Other | Label with pictorial health warning |
| Label with neutral statements about vapingLabels with neutral statements about vaping will be applied to participants' vaping devices and refills. At Visit 1, devices and refills will be labeled with 2 statements based on their assigned trial arm; at Visit 3, they will get 2 additional statements based on their assigned trial arm. The order of the 4 labels within this trial arm will be randomized using a Latin square design. Study investigators developed the text and design of these labels. | Other | Label with neutral statements about vaping |
Primary outcome
Mean Vaping Quit Intentions Score
Time frame: Up to 4 weeks
The primary outcome is vaping quit intentions measured by 3 survey items at 5 time points: post-labeling (Visit 1) and at 1, 2, 3, and 4 weeks (Visits 2-5). Study investigators will average the items to create a score for each time point and take an average across the time points. The range for this measure will be 1 to 5, with higher values indicating higher quit intentions.
16 secondary outcomes
Mean Knowledge Score
Time frame: Up to 4 weeks
Mean Cognitive Elaboration Score
Time frame: Up to 4 weeks
Mean Perceived Likelihood of Illness Score
Time frame: Up to 4 weeks
Mean Negative Affect Score
Time frame: Up to 4 weeks
Mean Attention Score
Time frame: Up to 4 weeks
Mean Information Seeking Score
Time frame: Up to 4 weeks
Mean Number of Conversations in Past Week
Time frame: Up to 4 weeks
Mean Vaping Reinforcement Attitudes Score
Time frame: Up to 4 weeks
Mean Uncontrolled Vaping Score
Time frame: Up to 4 weeks
Mean Number of Times Forgoing a Vape in Past Week
Time frame: Up to 4 weeks
Percent of Participants Who Made a Vaping Quit Attempt in Past 4 Weeks
Time frame: Up to 4 weeks
Percent of Participants Who Successfully Quit Vaping
Time frame: At 4 weeks
Mean Inaccurate Risk Perception Score
Time frame: Up to 4 weeks
Mean Stigma Score
Time frame: Up to 4 weeks
Mean Smoking Quit Intentions Score
Time frame: Up to 4 weeks
Percent of Participants Who Made a Smoking Quit Attempt in Past 4 Weeks
Time frame: Up to 4 weeks
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Sep 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: Yes. The trial investigators will produce a de-identified dataset and codebook for sharing with external investigators, making use of the UNC Dataverse digital data repository (dataverse.unc.edu) hosted by the Odum Institute Data Archive.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Noel Brewer, PhD principal investigator
University of North Carolina, Chapel Hill
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Label with text health warning, Label with pictorial health warning and Label with neutral statements about vaping in people with Vaping Behaviors, run by UNC Lineberger Comprehensive Cancer Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 10 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 12 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 12 Sep 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mean Vaping Quit Intentions Score (time frame: Up to 4 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Sep 2025.