Dyadic Financial Incentive Treatments for Dual Smoker Couples

Part of paid clinical trials in Athens, Georgia.

Sponsor
University of Oklahoma
Study ID
NCT06296849
Phase
PHASE2
Status
Recruiting
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Conditions

  • Smoking, Cigarette

Eligibility Criteria

Sex
ALL
Age
18 Years - N/A
Healthy Volunteers
Accepted

Interventions

  • Financial Incentive Treatment (FIT) — BEHAVIORAL
    In the present study, the investigators will provide financial incentives of $200 for biochemically verified abstinence at each of three time points (1 month, 3 month, and 6 month) following baseline. Additionally, the investigators will provide a bonus of $200 for participants who demonstrate abstinence at each of the time points. This incentive value is consistent with recent research using macro-level financial incentives and incorporates both short-term and long-term incentives to shape behavior.

Study Details

Smokers partnered with other smokers (i.e., dual-smoker couples) represent \~2/3 of all smokers. Dual-smoker couples (DSCs) are less likely to try to quit smoking and more likely to relapse during a quit attempt, reducing overall smoking cessation rates and representing a high-risk clinical population. Despite their high prevalence and risk for persistent smoking, however, there are limited data on smoking cessation interventions among DSCs. Building on previous research that suggests a) financial incentive treatments (FITs) are effective at increasing quit rates and b) dyadic adaptations of FITs are feasible for implementation in DSCs, the proposed study will systematically two versions of FITs to enhance smoking cessation among DSCs. In addition to determining the efficacy of these dyadic FITs for smoking abstinence in DSCs, the investigators will consider the cost and cost effectiveness of each adaptation as well as mechanisms of change to inform future implementation research. The investigators will additionally consider secondary outcomes including abstinence during treatment and long-term abstinence maintenance after end of treatment. The investigators will address these questions in a three-group randomized controlled trial (RCT). In all conditions, individuals who have smoking partners (i.e., targets) will receive usual care (combination fast and slow acting Nicotine Replacement Therapy + quitting resources). In two conditions, participants will receive incentives for abstinence at three time points (1, 3, and 6 months post-baseline). In the SFIT condition, only the target in a couple will be offered incentives; in the DFIT condition, both target and partner will be offered incentives. Primary efficacy outcome is % point-prevalence abstinence at 6 months post-baseline among targets. Secondary outcomes are point-prevalence abstinence at 1 and 3 months during the treatment and 6 months post-treatment (12-months post-baseline), as well as partner outcomes. The investigators will evaluate possible mechanisms of change including partner support and individual and partner motivation to quit as well as evaluate the cost and relative cost of each abstainer within and across condition. These data on the efficacy, mechanisms, and costs of FITs for DSCs will inform population level implementation and promote successful quitting in this treatment refractory population.

Key Dates

Start date
Jan 18, 2024
Status verified
Apr 2026
Primary completion
May 31, 2028
Completion
May 31, 2028

Study Design

Enrollment
900 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • No Intervention: No-FIT Treatment-as-Usual (TAU) Condition
    Participants in the no-FIT control condition will not receive incentives.
  • Experimental: Single-Target FIT (SFIT)
    One couple member offered incentives. Targets in the SFIT condition will be offered financial incentives for biochemically verified abstinence ($200 at each of three follow-ups \[1, 3, and 6 Month\]).
  • Experimental: Dyadic-FIT condition (DFIT)
    Both couple members offered incentives and tracked across 12 months. Both targets and partners will be offered financial incentives for abstinence. Thus, in this condition, the total financial incentives offered to the dyad are twice the amount as offered to participants in the SFIT condition.

Primary Outcome Measure

Point-Prevalence Abstinence at End of Treatment [ Time Frame: 6 Month ]

Central Contacts

Locations (2)

FacilityCityStateZIPSite coordinators
University of GeorgiaAthensGeorgia30602-
University of Oklahoma Health CampusTulsaOklahoma74135
Michelle vanDellen, PhD
[email protected]
Kirsten Blum, MS
[email protected]

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By research site
University of Georgia· Athens, GAUniversity of Oklahoma Health Campus· Tulsa, OK

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