Trial for Harm Reduction With Incentives & Vaping E-cigarettes

NCT ID: NCT06111053

Last Updated: 2024-11-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

39 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-01

Study Completion Date

2024-08-28

Brief Summary

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The purpose of this study is to provide preliminary information on the effect of electronic nicotine delivery systems (ENDS) provisions and contingent incentives (CI) on smoking in individuals with overweight/obesity who smoke cigarettes (SWO). All participants will be provided information on the comparative risk of ENDS relative to cigarette smoking, and a randomized group of participants will be provided ENDS provisions for 6 weeks. All participants will complete breath samples for 28 days to measure their exhaled carbon monoxide and will either receive fixed incentives for sample completion or receive varying incentives contingent on their carbon monoxide levels. Researchers will compare groups to understand the effect of each condition on smoking-related behavior.

Detailed Description

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Individuals with overweight/obesity who smoke cigarettes (SWO) have greatly increased risks of metabolic, cardiac, and pulmonary diseases due to the synergistic effects of tobacco and obesity. Switching to electronic nicotine delivery systems (ENDS) may decrease the risk of negative health outcomes and be a promising approach for SWO. The purpose of this study is to provide preliminary information on the effect of electronic nicotine delivery systems (ENDS) provisions and contingent incentives (CI) on individuals with overweight/obesity who smoke cigarettes (SWO). The primary aim of this study is to examine the effect of ENDS provision on smoking and the effect of the provision of CI provision on smoking. The secondary aims are to assess the effects of ENDS and CI provision on exhaled carbon monoxide (CO), cigarette dependence, intention to quit smoking, and quitting self-efficacy, and to determine whether any changes in weight occurred secondary to the use of ENDS. Evidence of the efficacy of switching to ENDS and the use of CI could be utilized in healthcare settings to reduce the risk of morbidity and mortality among smokers with obesity.

Conditions

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Obesity Smoking Cessation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

A 2x2 factorial design comparing

* contingent incentives (CI) for smoking abstinence to noncontingent incentives (NI)
* the provision of ENDS (ENDS) to no provision of ENDS (No ENDS)

SWO (N=36) will be randomized to receive 4 weeks of monetary incentives contingent on their smoking abstinence (CI) or after completing breath samples only (NI). They will also be randomized to receive either a 6-week provision of ENDS with information communicating the comparative risk of ENDS use relative to smoking or information communicating the comparative risk of ENDS relative to smoking without ENDS provision. Conditions are as follows:

* C1: ENDS + CI
* C2: NoENDS + CI
* C3: ENDS + NI
* C4: NoENDS + NI
Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors
Outcome assessor will not know the outcome of randomized assignment.

Study Groups

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ENDS and CI

Participants in this arm will receive information about the comparative risk of electronic nicotine delivery systems (ENDS) relative to smoking as well as 6 weeks' worth of provisions of ENDS and will receive 4 weeks of monetary incentives for complete abstinence from smoking (after a controlled ramp down of smoking).

Group Type EXPERIMENTAL

ENDS

Intervention Type OTHER

Participants in active comparator groups that include ENDS will receive 6-weeks worth of ENDS supplies.

CI

Intervention Type OTHER

Participants in active comparator groups will receive incentives that vary based on participant abstinence from smoking, measured by a carbon monoxide breath sample.

No ENDS and CI

Participants in this arm will receive information about the comparative risk of electronic nicotine delivery systems (ENDS) relative to smoking and will receive 4 weeks of monetary incentives for complete abstinence from smoking (after a controlled ramp down of smoking).

Group Type EXPERIMENTAL

CI

Intervention Type OTHER

Participants in active comparator groups will receive incentives that vary based on participant abstinence from smoking, measured by a carbon monoxide breath sample.

No ENDS

Intervention Type OTHER

Participants in active comparator groups labeled No ENDS will only receive information about the comparative risk of ENDS relative to combustible cigarettes.

ENDS and NI

Participants in this arm will receive information about the comparative risk of electronic nicotine delivery systems (ENDS) relative to smoking as well as 6 weeks' worth of provisions of ENDS and will receive monetary incentives for providing breath samples only (non-contingent on smoking status).

Group Type EXPERIMENTAL

ENDS

Intervention Type OTHER

Participants in active comparator groups that include ENDS will receive 6-weeks worth of ENDS supplies.

NI

Intervention Type OTHER

Participants in active comparator groups labeled NI will receive compensation for each breath sample provided throughout the study, with no variation.

No ENDS and NI

Participants in this arm will receive information about the comparative risk of electronic nicotine devices (ENDs) relative to smoking and will receive monetary incentives for providing breath samples only (non-contingent on smoking status).

Group Type EXPERIMENTAL

No ENDS

Intervention Type OTHER

Participants in active comparator groups labeled No ENDS will only receive information about the comparative risk of ENDS relative to combustible cigarettes.

NI

Intervention Type OTHER

Participants in active comparator groups labeled NI will receive compensation for each breath sample provided throughout the study, with no variation.

Interventions

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ENDS

Participants in active comparator groups that include ENDS will receive 6-weeks worth of ENDS supplies.

Intervention Type OTHER

CI

Participants in active comparator groups will receive incentives that vary based on participant abstinence from smoking, measured by a carbon monoxide breath sample.

Intervention Type OTHER

No ENDS

Participants in active comparator groups labeled No ENDS will only receive information about the comparative risk of ENDS relative to combustible cigarettes.

Intervention Type OTHER

NI

Participants in active comparator groups labeled NI will receive compensation for each breath sample provided throughout the study, with no variation.

Intervention Type OTHER

Other Intervention Names

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Electronic Nicotine Delivery Systems Contingent Incentives Non-Contingent Incentives

Eligibility Criteria

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Inclusion Criteria

* BMI ≥ 25 kg/m2
* smoked ≥ 5 cigarettes/day during the past year
* 21 or older
* exhaled CO of \> 6 ppm at Baseline
* willing to use ENDs for 6 weeks
* daily access to a Bluetooth-enabled smartphone/tablet

Exclusion Criteria

* planning to set a smoking quit date in the next 30 days
* receiving smoking cessation treatment of any kind in the past 30 days
* currently using ENDS \> 4 day per month
* hospitalized for mental illness in past 30 days
* heart-related event (e.g., heart attack, severe angina) in past 30 days
* resides with another person enrolled in the study
* pregnant, nursing, or planning to become pregnant in the next 6 months.
Minimum Eligible Age

21 Years

Maximum Eligible Age

99 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Institute of General Medical Sciences (NIGMS)

NIH

Sponsor Role collaborator

Brown University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Cara M Murphy, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Brown University

Locations

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Brown University School of Public Health

Providence, Rhode Island, United States

Site Status

Countries

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United States

Other Identifiers

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P20GM130414

Identifier Type: NIH

Identifier Source: secondary_id

View Link

2022003359

Identifier Type: -

Identifier Source: org_study_id

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