Prevalence of population smoking cessation by electronic cigarette use status in a national sample of recent smokers

Addict Behav. 2018 Jan;76:129-134. doi: 10.1016/j.addbeh.2017.08.002. Epub 2017 Aug 3.

Abstract

Introduction: Amid decreasing rates of cigarette smoking and a rise in e-cigarette use, there is a need to understand population patterns of use to inform tobacco control efforts and evaluate whether e-cigarettes may play a role in tobacco harm reduction.

Methods: This study merged data from the 2014 and 2015 National Health Interview Survey (NHIS) and restricted the sample to recent smokers [i.e., current smokers and former smokers who quit in 2010 or later (n=15,532)]. Log-binomial regression estimated adjusted prevalence ratios (aPR) for being quit by e-cigarette use status (i.e., daily, some day, former trier, never). All analyses controlled for factors traditionally correlated with smoking cessation.

Results: A quarter of the sample (25.2%) were former smokers. The prevalence of being quit was significantly higher among daily e-cigarette users compared to those who had never used e-cigarettes [52.2% vs. 28.2%, aPR: 3.15 (2.66, 3.73)]. Those who used e-cigarettes on some days were least likely to be former smokers (12.1%). These relationships held even after accounting for making a quit attempt and use of other tobacco products.

Conclusions: Among those with a recent history of smoking, daily e-cigarette use was the strongest correlate of being quit at the time of the survey, suggesting that some smokers may have quit with frequent e-cigarette use or are using the products regularly to prevent smoking relapse. However, the low prevalence of cessation among infrequent e-cigarette users highlights the need to better understand this subgroup, including the individual factors and/or product characteristics that may inhibit cessation.

Keywords: Cigarettes; E-cigarettes; Smoking cessation; Tobacco.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Cigarette Smoking / therapy*
  • Cross-Sectional Studies
  • Electronic Nicotine Delivery Systems / statistics & numerical data*
  • Female
  • Health Surveys / statistics & numerical data
  • Humans
  • Interviews as Topic
  • Male
  • Middle Aged
  • Prevalence
  • Smokers / statistics & numerical data*
  • Smoking Cessation / methods*
  • Smoking Cessation / statistics & numerical data
  • United States
  • Young Adult