Social and Monetary Incentives for Smoking Cessation at Large Employers

Summary

The investigators will conduct a cluster randomized controlled trial of several behavioral interventions for smoking cessation among a sample of employees at large workplaces in the Bangkok metropolitan area. The study aims to test the impacts of different incentive structures for smoking cessation on take-up, effectiveness, and cost-effectiveness. The interventions are designed to elucidate certain principles from the field of behavioral economics.

Conditions

• Tobacco Use Disorder

Interventions

BEHAVIORAL

Usual Care

Participants will receive in-person group counseling from a trained smoking cessation counselor. Participants will learn about reasons to quit smoking, strategies for quitting smoking, and additional resources available to support the quit attempt. Participants will also complete a quit plan.

BEHAVIORAL

Deposits

Participants will have to deposit a certain amount of their own money at enrollment. Participants will be able to make additional voluntary deposits above the minimum amount during the intervention period. The participant will be refunded all deposits if he quits smoking at 3 months, as verified by a urine cotinine test. The participant will forfeit all deposits if he continues to smoke at 3 months, as verified by a urine cotinine test.

BEHAVIORAL

Small Individual Bonus

Each participant will receive a monetary bonus from the study investigators if he or she quit smoking, as verified by a urine cotinine test.

BEHAVIORAL

Large Individual Bonus

Each participant will receive a monetary bonus from the study investigators if he or she quit smoking, as verified by a urine cotinine test. The bonus is twice the value of that in the Small Individual Bonus group.

BEHAVIORAL

Teammate

Each participant will be randomly assigned one teammate to provide social support during the quit attempt. Each participant will be assigned to a participating coworker who speaks the same primary language and works the same work shift as the participant.

BEHAVIORAL

Team Bonus

If the participant and assigned teammate both quit smoking at 3 months, as verified by a urine cotinine test, then each will receive a monetary bonus. The team bonus is equal in value to that in the Large Individual Bonus group.

Sponsors & Collaborators

• National Institutes of Health (NIH)

  collaborator NIH

• National Institute on Drug Abuse (NIDA)

  collaborator NIH

• Mahidol University

  collaborator OTHER

• University of California, Berkeley

  lead OTHER

Principal Investigators

• William H. Dow, PhD · University of California, Berkeley

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Model

SINGLE_GROUP

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2015-04-30

Primary Completion

2017-08-31

Completion

2017-08-31

Countries

• Thailand

Study Locations