Immediate versus delayed quitting and rates of relapse among smokers treated successfully with varenicline, bupropion SR or placebo
Open accessAbstract
AIMS: We assessed to what degree smokers who fail to quit on the target quit date (TQD) or lapse following TQD eventually achieve success with continued treatment. DESIGN: A secondary analysis of pooled data of successful quitters treated with varenicline (306 of 696), bupropion (199 of 671) and placebo (121 of 685) from two identically-designed clinical trials of varenicline versus bupropion sustained-release and placebo. SETTING: Multiple research centers in the US. PARTICIPANTS: Adult smokers (n==2052) randomized to 12 weeks drug treatment plus 40 weeks follow-up. MEASUREMENT: The primary end-point for the trials was continuous abstinence for weeks 9-12. TQD was day 8. Two patterns of successful quitting were identified. Immediate quitters (IQs) were continuously abstinent for weeks 2-12. Delayed quitters (DQs) smoked during 1 or more weeks for weeks 2-8. FINDINGS: Cumulative continuous abstinence (IQs + DQs) increased for all treatments during weeks 3-8. Overall IQs and DQs for varenicline were (24%; 20%) versus bupropion (18.0%, P=0.007; 11.6%, P<0.001) or placebo (10.2%, P<0.001; 7.5%, P<0.001). However, DQs as a proportion of successful quitters was similar for all treatments (varenicline 45%; bupropion 39%; placebo 42%) and accounted for approximately one-third of those remaining continuously abstinent for weeks 9-52. No gender differences were observed by quit pattern. Post-treatment relapse was similar across groups. CONCLUSIONS: Our data support continuing cessation treatments without interruption for smokers motivated to remain in the quitting process despite lack of success early in the treatment.
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This may account in part for the modest long-term quit rates achieved with these replacement therapies.
“This could partially explain why the success rates for long-term smoking cessation with these replacement therapies are not very high (Jorenby et al., 2006;Gonzales et al., 2010).”
From Chronic Sazetidine-A at Behaviorally Active Doses Does Not Increase Nicotinic Cholinergic Receptors in Rodent Brain (2012) · cites this paper as Gonzales et al., 2010
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- Authors
- Gonzales, D., Jorenby, D. E., Brandon, T. H., Arteaga, C., & Lee, T. C.
- Affiliations
- Oregon Health & Science University (US)
- University of Wisconsin–Madison (US)
- Moffitt Cancer Center (US)
- Pfizer (United States) (US)
- Corresponding author
- Gonzales, David
- Venue
- Addiction
- Publisher
- Wiley
- Published
- 2010-09
- Volume
- 105
- Issue
- 11
- Pages
- 2002-2013
- ISSN
- 0965-2140 (ISSN-L)
- 1360-0443
- PMC
- PMC2991770
- OpenAlex
- W1549904073
- Cited by
- 37
- References
- 34
- Citations by year
- 2025: 1 · 2023: 5 · 2022: 2 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 4 · 2016: 2 · 2015: 5 · 2014: 2 · 2012: 7
- FWCI
- 2.38
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Addiction (publishedVersion)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
- Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
- Keywords
- smoking cessation, varenicline, bupropion sustained release, relapse, continuous abstinence, nicotine dependence
- MeSH terms
- Varenicline, Adolescent, Adult, Aged, Benzazepines, Breath Tests, Carbon Monoxide, Delayed-Action Preparations, Drug Labeling, Female, Humans, Health Knowledge, Attitudes, Practice, Male, Middle Aged, Motivation, Placebos, Quinoxalines, Smoking, Substance Withdrawal Syndrome, Time Factors, Logistic Models, Smoking Cessation, Bupropion, Treatment Outcome, Nicotinic Agonists, Dopamine Uptake Inhibitors, Secondary Prevention, Young Adult
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