Feasibility and Acceptability of Switching to E-cigarettes Among Cigarette Smokers Engaged in SUD Treatment

Tobacco Dependence Caused by Cigarettes

The purpose of the proposed study is to examine the feasibility of integrating a smoking harm reduction program featuring provision of e-cigarettes and tailored instructions to switch into an existing substance use disorder treatment program. This longitudinal study includes three weeks of micro-surveys delivered via text messages to evaluate the intervention's feasibility and acceptability, gather initial effectiveness data, and understand participants' lived experience of smoking and vaping while engaged in substance use disorder treatment.

The purpose of this study is to examine the feasibility of integrating a smoking harm reduction program featuring provision of e-cigarettes and tailored instructions to switch into an existing substance use disorder treatment program. The proposed longitudinal study will include three weeks of micro-surveys delivered via text messages (called ecological momentary assessments, or EMA) to evaluate the intervention's feasibility and acceptability, gather initial effectiveness data, and understand participants' lived experience of smoking and vaping while engaged in substance use disorder treatment. As people gain access to substance use disorder treatment and the acute risk of death due to overdose diminishes, there is a significant need for data-driven, novel, and scalable smoking harm reduction approaches that meet people in recovery where they are and help them live longer, healthier lives by either significantly reducing their smoking frequency or switching completely to a much lower harm nicotine product. Up to 30 daily cigarette smokers who are engaged in a substance use disorder treatment program and are not interested in quitting nicotine use but are interested in reducing the harm from smoking will be enrolled in the study. Aims include: Aim 1. Examine the feasibility (e.g., enrollment, attrition), acceptability (e.g., e-cigarette use rates, user experience), and effectiveness (e.g., % who reduced smoking by at least 50% in Week 3 vs. Week 1; % who switched completely at Week 3) of the intervention on cigarette smoking among people engaged in substance use disorder treatment. It is anticipated that of the 30 people enrolled, 20 will complete the protocol. In Week 1, participants will report their usual smoking to establish baseline behavior. In Week 2, participants will be provided with an e-cigarette, nicotine liquid, and instructions to switch developed in Aim 1. In Week 3, participants' nicotine liquid supply will be replenished, and data collection will continue. Aim 2. Describe participants' understanding of the meaning and utility of cigarettes and e-cigarettes in their lives. Up to 20 participants will take part in a semi-structured interview at the end of Week 3. Interviews will focus on their experience trying to switch while engaged in substance use disorder treatment and how their cognitions, expectancies, social relationships, and norms evolved over the 2 weeks of e-cigarette use. Qualitative data will complement quantitative data, adding participants' understanding of the why driving their behavior to the what captured with EMA, and will identify opportunities to improve the intervention and identify blind spots in our assessments for the main study. In-depth interviews also facilitate investigation of exploratory hypotheses that arise during data collection, suggesting additional areas of inquiry for a subsequent R01 proposal.

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