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, 16 (1), 1105

E-cigarette Use and Smoking Reduction or Cessation in the 2010/2011 TUS-CPS Longitudinal Cohort

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E-cigarette Use and Smoking Reduction or Cessation in the 2010/2011 TUS-CPS Longitudinal Cohort

Yuyan Shi et al. BMC Public Health.

Abstract

Background: Electronic cigarettes (e-cigarettes) are heavily marketed and widely perceived as helpful for quitting or reducing smoking intensity. We test whether ever-use of e-cigarettes among early adopters was associated with: 1) increased cigarette smoking cessation; and 2) reduced cigarette consumption.

Methods: A representative cohort of U.S. smokers (N = 2454) from the 2010 Tobacco Use Supplement to the Current Population Survey (TUS-CPS) was re-interviewed 1 year later. Outcomes were smoking cessation for 30+ days and change in cigarette consumption at follow-up. E-cigarettes use was categorized as for cessation purposes or for another reason. Multivariate regression was used to adjust for demographics and baseline cigarette dependence level.

Results: In 2011, an estimated 12 % of adult U.S. smokers had ever used e-cigarettes, and 41 % of these reported use to help quit smoking. Smokers who had used e-cigarettes for cessation were less likely to be quit for 30+ days at follow-up, compared to never-users who tried to quit (11.1 % vs 21.6 %; ORadj = 0.44, 95 % CI = 0.2-0.8). Among heavier smokers at baseline (15+ cigarettes per day (CPD)), ever-use of e-cigarettes was not associated with change in smoking consumption. Lighter smokers (<15 CPD) who had ever used e-cigarettes for quitting had stable consumption, while increased consumption was observed among all other lighter smokers, although this difference was not statistically significant.

Conclusions: Among early adopters, ever-use of first generation e-cigarettes to aid quitting cigarette smoking was not associated with improved cessation or with reduced consumption, even among heavier smokers.

Keywords: Electronic cigarettes; Smoking cessation; Smoking reduction.

Figures

Fig. 1
Fig. 1
Percentage of smokers with 30+ day cessation at follow-up, among those who made a quit attempt
Fig. 2
Fig. 2
Changes in smoking intensity among smokers by product, baseline consumption level and reported cessation attempts

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