About this trial
In this project, after systematically developing electronic nicotine delivery systems (ENDS) pictorial health warning labels (HWLs), a proven clinical lab model will be used to examine and test their effect when these are placed on the ENDS device on a variety of subjective (e.g. satisfaction, harm perception, nicotine dependence, intention to quit) and objective outcomes (e.g. plasma nicotine, puff topography) in young adults.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Generally healthy individuals (determined by physical examination).
Age of 21-35 years.
Is willing to provide informed consent.
Is willing to attend the lab as required by the study protocol.
Disqualifiers
Report smoking cigarettes regularly (> 5 cigarettes/month in the past year).
Report regular use of any other tobacco/nicotine product (e.g., e-cig, pipes, cigars) in the past year.
Women who are breast-feeding or test positive for pregnancy (by urinalysis at screening).
Individuals with self-reported history of chronic disease or psychiatric conditions.
Trial design
Crossover
Treatments tested in this trial
Preferred ENDS
Other interventionPreferred ENDS without HWL on device
Preferred ENDS with HWL
Other interventionPreferred ENDS with a HWL on device
Treatment groups
Trial outcomes
Primary outcomes
Plasma nicotine
Change in plasma nicotine level
Secondary outcomes
Puff topography
Measurement of puffing behavior
Minnesota Nicotine Withdrawal Scale
This scale is used to assess the extent to which product use reduces tobacco abstinence symptoms, and consists of 11 items scored 0 - 100. These items are presented as Visual Analog Scale with item (measure) centered above a horizontal line anchored on the left with not at all and on the right with extremely.
Tiffany-Drobes Questionnaire of Smoking Urges
This scale is used to assess the extent to which product use reduces tobacco abstinence symptoms, and consists of 10 items that are scored 0 - 7. Rated on a 7-point Likert scale ranging from 0 (strongly disagree) to 6 (strongly agree).
Carbon monoxide levels
Change in carbon monoxide levels (in parts per million)
Other outcomes
Heart rate
Change in heart rate, measured in beats per minute
Blood pressure
Change in blood pressure, measured in mm/hg
Sponsors and contacts
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Florida International University
Lead sponsor
University of Miami
Collaborator