title: Experimentation with e-cigarettes as a smoking cessation aid: a cross-sectional study in 28 European Union member states.
abstract: To describe patterns of experimentation with electronic cigarettes as a smoking cessation aid, their self-reported impact on smoking cessation and to identify factors associated with self-reported successful quit attempts within the European Union (EU).
  
  
  
  A cross-sectional study.
  
  
  
  28 European Union member states.
  
  
  
  We analysed data from wave 82.4 of the Special Eurobarometer survey, collected in December 2014 from all 28 EU member states. The total sample size was n=27 801 individuals aged ≥15 years; however, our analyses were conducted in different subgroups with sample sizes ranging from n=470 to n=9363. Data on e-cigarette experimentation and its self-reported impact on smoking cessation were collected. Logistic regression models were used to assess factors associated with experimentation of e-cigarettes as cessation aids and with successful quitting. Logistic regression was also used to assess changes in the use of e-cigarettes as cessation aids between 2012 (using data from wave 77.1 of the Eurobarometer) and 2014 in each member state.
  
  
  
  E-cigarettes were often experimented with as a cessation aid, especially among younger smokers (OR=5.29) and those who reported financial difficulties (OR=1.33). In total, 10.6% of those who had ever attempted to quit smoking and 27.4% of those who did so using a cessation aid had experimented with e-cigarettes as a cessation aid. Among those who had used e-cigarettes as a cessation aid, those with higher education were more likely to have been successful in quitting (OR=2.23). There was great variation in trends of use of e-cigarette as a cessation aid between member states.
  
  
  
  Experimentation with e-cigarettes as a potential cessation aid at a population level has increased throughout the EU in recent years, and certain population groups are more likely to experiment with them as cessation aids. Research on the potential population impact of these trends is imperatively needed.
authors.affiliation: Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK.
authors.forename: Filippos T
authors.initials: FT
authors.lastname: Filippidis
authors.affiliation: Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK.
authors.forename: Anthony A
authors.initials: AA
authors.lastname: Laverty
authors.affiliation: Clinic of Social and Family Medicine, School of Medicine, University of Crete, Heraklion, Greece.
authors.forename: Constantine I
authors.initials: CI
authors.lastname: Vardavas
mesh_terms: D000293:Adolescent; D000328:Adult; D003430:Cross-Sectional Studies; D066300:Electronic Nicotine Delivery Systems; D005062:European Union / Q000706:statistics & numerical data*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008875:Middle Aged; D011050:Policy Making; D015995:Prevalence; D011634:Public Health; D012907:Smoking / Q000453:epidemiology* / Q000331:legislation & jurisprudence; D016540:Smoking Cessation / Q000331:legislation & jurisprudence / Q000706:statistics & numerical data*; D055815:Young Adult
keywords: Europe; Tobacco; e-cigarette; smoking cessation