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Optimizing smoking cessation pharmacotherapy and counseling for adult primary care patients: a factorial randomized controlled trial.

Megan E Piper·Jessica W Cook·Danielle M McCarthy·Thomas M Piasecki·Adrienne L Johnson·Daniel M Bolt·Tanya R Schlam·Linda M Collins·Robin Mermelstein·Marlon P Mundt·Hasmeena Kathuria·Michael C Fiore·Timothy B Baker
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Abstract

BACKGROUND: Even with the most effective smoking cessation pharmacotherapies (i.e., varenicline or combination nicotine replacement [C-NRT]), the majority of people ultimately return to smoking. This research explored how to optimize the use of varenicline and C-NRT to promote smoking cessation. METHODS: Primary care patients participated in a 2x2x2x2 factorial experiment that evaluated 4 factors: 1) Medication Type (Varenicline vs. C-NRT [patch + mini-lozenge]), 2) Preparation (pre-quit) Medication (4 Weeks vs. Standard); 3) Medication Duration (Extended [24 weeks] vs. Standard [12 weeks]); and 4) Counseling Type (Cessation Counseling [4 sessions] vs. Referral Support [2 sessions focused on use of referral resources]). This study was discontinued prior to reaching the proposed sample size (N = 608) due to pandemic-related budgetary constraints. RESULTS: Participants (N = 496) were 55% women and 45.6% Black individuals. There were no statistically significant main effects of the 4 factors on abstinence at 12, 26 or 52 weeks. There was a 3-way interaction between Medication Type, Preparation Medication, and Counseling Type (p = 0.04) predicting the primary outcome of biochemically confirmed abstinence at 52 weeks; cessation counseling vs. referral support improved varenicline quit rates when 4 weeks versus 1 week of pre-quit medication was offered. For C-NRT, counseling type did not significantly improve quit rates regardless of the use of preparation medication. CONCLUSIONS: There was no robust evidence that enhanced pre-quit or extended duration of varenicline or C-NRT increased abstinence rates. More intensive counseling may support cessation for different pharmacotherapy regimens. Given the lack of consistent findings, this research should be viewed as exploratory to guide future research.

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HumansFemaleSmoking CessationVareniclinePrimary Health CareCounselingNicotine Replacement TherapySmoking Cessation AgentsAdultMaleMiddle AgedTobacco Use Cessation DevicesAdherence InterventionsNicotinic AgonistsTreatment OutcomeOptimizationPharmacotherapySmoking cessationJournal ArticleRandomized Controlled Trial

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Megan E Piper, Jessica W Cook, Danielle M McCarthy, Thomas M Piasecki, Adrienne L Johnson, Daniel M Bolt, Tanya R Schlam, Linda M Collins, Robin Mermelstein, Marlon P Mundt, Hasmeena Kathuria, Michael C Fiore, Timothy B Baker. 2026-08-07. Optimizing smoking cessation pharmacotherapy and counseling for adult primary care patients: a factorial randomized controlled trial.. https://doi.org/10.1016/j.addbeh.2026.108828

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Journal Article; Randomized Controlled Trial resourceAdherence Interventions subjectAdult subjectCounseling subjectFemale subjectHumans subjectJournal Article subjectMale subjectMiddle Aged subjectNicotine Replacement Therapy subjectNicotinic Agonists subjectOptimization subjectPharmacotherapy subjectRandomized controlled trials study

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