Preliminary Test of Reactive Carrot Incentives in a Practice Quit Environment With Contingency Management Incentives

NCT05072301 | Completed DMC

• 1 other identifier: 2000030430
• Study Type: interventional
• Target: 87
• Locations: 2 countries
• Sites: 2

Brief Summary

The primary aim of this study is to pilot test a novel reactive carrot approach for improving individuals' ability to stick to a "practice quit" program in a smoking cessation context. In this study, the treatment gives subjects an offer to forego a monetary incentive to forego the opportunity to receive subsequent abstention (contingency management) rewards.

Conditions

Smoking Cessation

Keywords

incentives

Outcome Measures

Primary Outcomes (3)

• Breath Carbon Monoxide Test (measured in ppm levels)

  A primary outcome is the sum of times a subject tested abstinent at the 6 CO testing meetings. To test for abstinence, a breath carbon monoxide test will be used to determine exposure to smoke. Abstinence will be coded as expired-air carbon monoxide (CO) levels below 5 ppm.

  14 days following intake date

• Proportion of CO (CO ≤ 4ppm)

  Proportion of 6 CO tests showing abstinence (CO ≤ 4ppm)

  14 days following intake date

• Maximum number of consecutive abstinent days

  The maximum number of consecutive abstinent days for each subject will be measured

  14 days following intake date

Secondary Outcomes (4)

• Attrition

  14 days following intake date

• Contingency Management Payment

  14 days following intake date

• Time to first relapse

  14 days following intake date

• Reduced smoking

  14 days following intake date, as well as 1 month and 6 months after intake date

Study Arms (2)

Contingency Management

EXPERIMENTAL

The treatment group will receive a onetime offer of $80 (a reactive carrot) to forego all abstinence (contingency management) reward payments in the future.

Behavioral: Contingency Management

Control

PLACEBO COMPARATOR

The control group will receive contingency management payments and other monetary benefits for completing the trial.

Behavioral: Control

Interventions

Contingency Management BEHAVIORAL

The treatment group will receive a onetime offer of $80 (a reactive carrot) to forego all abstinence (contingency management) reward payments in the future.

Contingency Management

Control BEHAVIORAL

The control group will receive contingency management payments and other monetary benefits for completing the trial.

Control

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age ≥ 18 years
• Smoke ≥ 3 cigarettes per week and expressing interest in quitting smoking.

You may not qualify if:

• Unstable psychiatric conditions such as suicidal ideation, acute psychosis, severe alcohol dependence, or dementia
• unstable medical conditions that have not been well controlled (e.g., acute infection requiring hospitalization) for the past 30 days
• pregnant or breastfeeding women
• those with limited decision making capacity.

Sponsors & Collaborators

• Yale University: lead

Study Sites (2)

General New Haven Public

New Haven, Connecticut, 06512, United States

Location

Ukraine site

Kiev, Ukraine

Location

MeSH Terms

Conditions

Smoking Cessation

Condition Hierarchy (Ancestors)

Health Behavior; Behavior

Study Officials

• Ian Ayres, PhD

  Yale Law School

  PRINCIPAL INVESTIGATOR

• Giuseppe Mattiacci, PhD

  University of Amsterdam

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: September 30, 2021
• First Posted: October 8, 2021
• Study Start: October 13, 2021
• Primary Completion: January 3, 2023
• Study Completion: January 3, 2023
• Last Updated: September 1, 2023

Record last verified: 2023-08

Locations

UA (1); US (1)