Abstinence Reinforcement Therapy for Veterans Who Smoke Tobacco and Are Experiencing Homelessness (New HART)

Significance to VA: Seventy to eighty percent of Veterans experiencing homelessness (VEH) smoke, which is four times the rate of the U.S. population and 2.5 times higher than among impoverished Americans. Smoking- related deaths among persons experiencing homelessness occur at double the rate seen among more stably housed people. While there are numerous challenges to smoking cessation among Veterans experiencing homelessness, four in five homeless smokers report interest in quitting. Innovation and Impact: The investigators recently developed and evaluated the effectiveness of a multi-component intervention called Abstinence Reinforcement Therapy (ART), which combined five sessions of telehealth-based cognitive-behavioral therapy, provision of smoking cessation aids, and four weeks of mobile contingency management (mCM). The investigators have added an additional CM period of eight weeks and opportunities for booster calls and repeated quit attempts, resulting in an intervention called ART+ to improve outcomes over time. The innovative use of web-based platform technology in the current proposal will remove numerous barriers that often prevent smokers experiencing homelessness from accessing high-quality, evidence-based care. There is tremendous inequity in smoking-related outcomes for VEH. The innovative use of mobile health technology in the current proposal will remove numerous barriers that often prevent Veterans who smoke and experience homelessness from accessing high- quality, evidence-based care. Specific Aims: Aim 1: Evaluate the comparative effectiveness of ART+ on bio-verified abstinence outcomes at three-, six-and 12-month follow-ups. The primary endpoint will be bioverified prolonged abstinence at the six-month follow-up. Aim 2: Assess the relative cost-effectiveness of ART+ to VA standard care smoking cessation on quality adjusted life years (QALY). Aim 3: Qualitatively evaluate implementation determinants of ART+ within Specialty Smoking Clinics and VA primary care for VEH programs. Methodology: 120 Veterans experiencing homelessness who smoke cigarettes will be randomly assigned to ART+ or to VA standard smoking cessation care. Self-reported and bioverified abstinence at six months are the primary outcomes. Cost-effectiveness analyses will be performed using QALY as the effectiveness measure. Rapid qualitative analytic methods will be used to evaluate implementation determinants of ART+ following enrollment of all study participants. Participants for the qualitative analysis will include clinicians and clinical support staff who provide care to Veterans experiencing homelessness, designated VA operations partners, and VA Tobacco Treatment Specialists. Purposive sampling will be used to identify potential participants and a structured interview guide based upon domains from the Consolidated Framework for Implementation Research (CFIR) will be administered. The investigators will use rapid qualitative analysis to answer the key qualitative research question: "What determinants will impact implementation of ART+?" The benefit of decreasing tobacco use (Aim 1) among VEH who smoke is tremendous as it will prevent significant morbidity and mortality. Moreover, if ART+ is shown to be cost effective (Aim 2) and implementation determinants are identified (Aim 3), the use of mobile phones as a platform to provide behavioral incentives has the potential to transform the delivery of smoking cessation care. Path to Translation/Implementation: Cost-effectiveness analysis (Aim 2) will help guide implementation decisions. Qualitative evaluation of the implementation determinants of ART+ within Specialty Smoking Clinics and VA primary care for VEH programs (Aim 3) will provide important information on effective implementation of ART+.