title: [E-cigarette use in university students and its relationship to cigarette smoking].
abstract: BACKGROUND
  There is concern that e-cigarette use could be a risk factor for subsequent cigarette smoking.
  
  
  METHODS
  This survey included a group of 1220 students at Aix-Marseille University who attended a check-up visit and volunteered to participate to the survey. They answered a standardized questionnaire relating to e-cigarette use, smoking habits and the relationship between both habits. Mean age of participants was 19.9 years and 56% of them were female.
  
  
  RESULTS
  All students invited to the check-up examination attended and agreed to participate in the survey. 13.3% of students answered they had already used e-cigarettes, a higher proportion of boys (17.5%) than girls (10.0%), starting at a mean age equal to 19.2 years. Forty-six percent of them had already smoked cigarettes, more girls (55.0%) than boys (45.0%). Among current cigarette smokers, e-cigarette use had induced giving up smoking in 12.6% and a decrease in the number of cigarettes smoked in 30.1%. Twenty percent said they begun to smoke cigarettes after using e-cigarettes.
  
  
  CONCLUSIONS
  E-cigarette use is much less prevalent than smoking conventional tobacco cigarettes. There is a strong link between both. E-cigarette use had allowed a cessation or reduction in tobacco smoking in half of users. E-cigarette users may go on to start tobacco smoking but prospective surveys are needed to know how this will evolve over time. E-cigarette use could also be a means to prevent or postpone cigarette smoking.
authors.affiliation: Clinique des bronches, allergie et sommeil, 13105 Marseille, France.
authors.forename: T
authors.initials: T
authors.lastname: Rakotozandry
authors.affiliation: Service de pneumologie et CDMR 44, 44000 Nantes, France.
authors.forename: N
authors.initials: N
authors.lastname: Stenger
authors.affiliation: Service inter-universitaire de médecine préventive, Marseille, France.
authors.forename: C
authors.initials: C
authors.lastname: Burel
authors.affiliation: Service inter-universitaire de médecine préventive, Marseille, France.
authors.forename: L
authors.initials: L
authors.lastname: Penna
authors.affiliation: Clinique des bronches, allergie et sommeil, 13105 Marseille, France.
authors.forename: M
authors.initials: M
authors.lastname: Ramadour
authors.affiliation: Service inter-universitaire de médecine préventive, Marseille, France.
authors.forename: P
authors.initials: P
authors.lastname: Disdier
authors.affiliation: Clinique des bronches, allergie et sommeil, 13105 Marseille, France. Electronic address: denis-andre.charpin@ap-hm.fr.
authors.forename: D
authors.initials: D
authors.lastname: Charpin
mesh_terms: D000293:Adolescent; D000328:Adult; D066300:Electronic Nicotine Delivery Systems / Q000706:statistics & numerical data*; D005260:Female; D005602:France / Q000453:epidemiology; D006801:Humans; D008297:Male; D015995:Prevalence; D012907:Smoking / Q000453:epidemiology*; D013334:Students / Q000706:statistics & numerical data; D014495:Universities / Q000706:statistics & numerical data*; D055815:Young Adult
keywords: Cigarette électronique; E-cigarette; Enquête; Public health; Santé publique; Survey; Tabagisme; Tobacco smoking