NCT04237272

Brief Summary

Some smokers who try e-cigarettes transition completely from cigarettes to e-cigarettes, but others continue to use both products, or abandon e-cigarettes and return completely to cigarettes. One factor that likely impacts these tobacco use patterns is the e-cigarette device used. The majority of e-cigarettes purchased today are one of two "types:" customizable tanks or pods. These e-cigarette types differ from each other in critical ways, like nicotine delivery and sensory characteristics, that are likely to impact use by influencing the relative reinforcement value of the product. The present study will be a randomized trial investigating the impact of e-cigarette device type on reinforcement value and use among current smokers. Current smokers (n=100) will be randomly assigned to either a control group that does not receive an e-cigarette or one of two e-cigarette types: a customizable tank, or a pod. The impact of device type on relative reinforcement value will be assessed using a choice task. Participants will also take home their assigned e-cigarette for a three-week sampling period. Primary outcomes include relative reinforcement value (choices to smoke in the lab-based choice task), cigarette smoking behavior (cigarettes smoked per day during sampling), and uptake (e-cigarette puffing episodes per day during sampling).

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
31

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Nov 2019

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 15, 2019

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

January 17, 2020

Completed
6 days until next milestone

First Posted

Study publicly available on registry

January 23, 2020

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2021

Completed
23 days until next milestone

Study Completion

Last participant's last visit for all outcomes

June 24, 2021

Completed
1.5 years until next milestone

Results Posted

Study results publicly available

December 21, 2022

Completed
Last Updated

December 21, 2022

Status Verified

November 1, 2022

Enrollment Period

1.5 years

First QC Date

January 17, 2020

Results QC Date

August 1, 2022

Last Update Submit

November 22, 2022

Conditions

Outcome Measures

Primary Outcomes (1)

  • Choices to Smoke

    The percentage of choices to smoke the conventional cigarette at the Week 3 visit. Participants chose between smoking a conventional cigarette, using their assigned e-cigarette, and not using any tobacco product. Participants made the choice 10 times. Outcome is calculated as = ((number of choices to smoke / 10)\*100)

    Week 3 visit

Secondary Outcomes (1)

  • Average Cigarettes Per Day

    Week 3

Study Arms (3)

Pod System

ACTIVE COMPARATOR

Participants assigned to this intervention will try to pod system e-cigarette in the lab and receive a pod system e-cigarette to use for a three week sampling period.

Other: Pod System E-cig

Customizable Tank

ACTIVE COMPARATOR

Participants assigned to this intervention will try to customizable tank system e-cigarette in the lab and receive a customizable tank system e-cigarette to use for a three week sampling period.

Other: Customizable Tank E-cig

Control

ACTIVE COMPARATOR

Participants assigned to this arm will not receive any e-cigarette

Other: Control

Interventions

Participants assigned to this intervention will try to pod system e-cigarette in the lab and receive a pod system e-cigarette to use for a three week sampling period.

Pod System

Participants assigned to this intervention will try to customizable tank system e-cigarette in the lab and receive a customizable tank system e-cigarette to use for a three week

Customizable Tank
ControlOTHER

Participants will not receive any e-cigarette

Control

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • daily smoker
  • interested in using e-cigs
  • have a smartphone that can receive text messages and has access to the internet or have an e-mail account they check daily (necessary for daily diary completion)
  • be at least 21 years of age

You may not qualify if:

  • additional tobacco use criteria
  • additional medical criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Medical University of South Carolina

Charleston, South Carolina, 29425, United States

Location

MeSH Terms

Conditions

SmokingTobacco Use

Condition Hierarchy (Ancestors)

Behavior

Results Point of Contact

Title
Dr. Tracy Smith
Organization
Medical University of South Carolina

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

January 17, 2020

First Posted

January 23, 2020

Study Start

November 15, 2019

Primary Completion

June 1, 2021

Study Completion

June 24, 2021

Last Updated

December 21, 2022

Results First Posted

December 21, 2022

Record last verified: 2022-11

Locations