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Friday, March 28, 2014


Journal Scan Summary

Title:A Longitudinal Analysis of Electronic Cigarette Use and Smoking Cessation
Date Posted:  March 24, 2014
Authors:Grana RA, Popova L, Ling PM.
Citation:JAMA Intern Med 2014;Mar 24:[Epub ahead of print].

Study Question:

Do electronic cigarettes (e-cigarettes) improve smoking cessation rates compared to other methods or placebo?


This research letter describes data on e-cigarette use in association with quit rates. Participants from the Knowledge Networks who completed a baseline survey in November 2011 and were self-identified current smokers were included in this analysis. Follow-up was conducted through November 2012. A total of 1,549 participants completed the survey in 2011, of which 1,189 were current smokers; 81.3% completed the follow-up survey. An additional 240 provided nonsensical data and were excluded. Baseline e-cigarette (in the prior 30 days) use was measured with the yes or no question. Cigarettes used per day (continuous variable), time to first cigarette
A total of 949 participants were included in this analysis. Women, younger adults, and individuals with less education were more likely to report using e-cigarettes. At baseline, a greater proportion of e-cigarette users reported smoking their first cigarette
Conclusions:The investigators concluded that e-cigarette use by smokers was not followed by greater rates of quitting or by reduction in cigarette consumption 1 year later. Regulations should prohibit advertising claiming or suggesting that e-cigarettes are effective smoking cessation devices until claims are supported by scientific evidence.


These data suggest that e-cigarette use is not associated with higher quit rates. However, given the small number of e-cigarette users and use of self-reported data on smoking cessation, further study is warranted.


Elizabeth A. Jackson, MD, F.A.C.C. (Disclosure)


Prevention/Vascular, General Cardiology, CardioMetabolic

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