Concurrent E-Cigarette Use During Tobacco Dependence Treatment in Primary Care Settings: Association With Smoking Cessation at Three and Six Months

Article


Zawertailo, Laurie Z, Pavlov, Dmytro, Ivanova, Anna, Ng, Ginnie, Baliunas, Dolly and Selby, Peter. 2017. "Concurrent E-Cigarette Use During Tobacco Dependence Treatment in Primary Care Settings: Association With Smoking Cessation at Three and Six Months." Nicotine and Tobacco Research. 19 (2), pp. 183-189. https://doi.org/10.1093/ntr/ntw218
Article Title

Concurrent E-Cigarette Use During Tobacco Dependence Treatment in Primary Care Settings: Association With Smoking Cessation at Three and Six Months

ERA Journal ID13722
Article CategoryArticle
AuthorsZawertailo, Laurie Z, Pavlov, Dmytro, Ivanova, Anna, Ng, Ginnie, Baliunas, Dolly and Selby, Peter
Journal TitleNicotine and Tobacco Research
Journal Citation19 (2), pp. 183-189
Number of Pages7
Year2017
PublisherOxford University Press
Place of PublicationUnited Kingdom
ISSN1462-2203
1469-994X
Digital Object Identifier (DOI)https://doi.org/10.1093/ntr/ntw218
Web Address (URL)https://academic.oup.com/ntr/article-abstract/19/2/183/2631714?redirectedFrom=fulltext
Abstract

Introduction:
Electronic cigarettes (e-cigarettes) are being used as cessation aids by many smokers despite a lack of empirical evidence regarding their safety and efficacy. We analyzed the association of e-cigarette use and smoking abstinence in a population of smokers accessing standard smoking cessation treatment (nicotine replacement therapy [NRT] plus behavioral counseling) through primary care clinics in Ontario, Canada.

Methods:
Participants were recruited through 187 primary care clinics across Ontario, Canada and were eligible for up to 26 weeks of brief behavioral counseling and individualized dosing of NRT at no cost. Adjusted logistic regression models were used to examine the association between concurrent e-cigarette use and smoking abstinence at 3- and 6-month follow-ups.

Results:
Of the 6526 participants who completed a 3-month follow-up, 18.1% reported using an e-cigarette while in treatment. The majority of e-cigarette users (78.2%) reported using an e-cigarette for smoking cessation. At 3-month follow-up, e-cigarette use was negatively associated with abstinence after controlling for confounders (adjusted odds ratio [AOR] = 0.706, p < .001, 95% confidence interval [CI] = 0.607–0.820). E-cigarette use was also negatively associated with abstinence at 6-month follow-up (AOR = 0.502, p < .001, 95% CI = 0.393–0.640).

Conclusion:
E-cigarette use was negatively associated with successful quitting in this large community sample of smokers accessing standard evidence-based smoking cessation treatment through primary care clinics, even after adjusting for covariates such as severity of tobacco dependence, gender, and age. The findings suggest that concurrent use of e-cigarettes with NRT may harm cessation attempts.

Implications:
This study confirms previous findings from observational studies regarding the negative association between e-cigarette use and smoking cessation, but in a large cohort of smokers enrolled in an evidence-based treatment program. The implications of these findings are that concurrent use of e-cigarettes during a quit attempt utilizing cost-free evidence-based treatment (NRT plus behavioral counseling) does not confer any added benefit and may hamper successful quitting.

Keywordselectronic cigarettes; risk reduction counseling; primary health care; nicotine dependence; behavior therapy; smoking cessation; follow-up; smoking
ANZSRC Field of Research 2020420399. Health services and systems not elsewhere classified
Public NotesFiles associated with this item cannot be displayed due to copyright restrictions.
Byline AffiliationsCentre for Addiction and Mental Health, Canada
University of Toronto, Canada
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