title: [Changes in tobacco consumption: boom of roll-your-own cigarettes and emergence of e-cigarettes].
abstract: OBJECTIVE
  To assess changes in smoking prevalence and study roll-your-own (RYO) tobacco and e-cigarette use in the Galician population between 2007 and 2015.
  
  
  METHODS
  Data were obtained from five independent, cross-sectional studies carried out in Galicia (Spain) between 2007-2015 in the population aged 16 and over (n=8,000/year). Prevalence of use was estimated, with 95% confidence intervals, overall, according to sex and by age group, area of residence and level of education.
  
  
  RESULTS
  Smoking prevalence decreased from 25.4% in 2007 to 21.8% in 2015. In 2007, 1.8% of current smokers declared that they had smoked RYO tobacco, compared to 18.6% in 2015. Among smokers, RYO tobacco consumption increased across all demographic groups. In both 2014 and 2015, ever use of e-cigarettes was 0.7%. E-cigarette use was more frequent in urban settings.
  
  
  CONCLUSIONS
  Smoking prevalence decreased in Galicia between 2007 and 2015, and there has been rapid growth in the prevalence of RYO tobacco use. Although smokers are more likely to use e-cigarettes, both former and never smokers declared their use. The boom of RYO cigarettes and the emergence of e-cigarettes highlight the importance of having continuous surveillance systems to identify smoking behavioural changes.
authors.affiliation: Servicio de Medicina Preventiva y Salud Pública, Complexo Hospitalario Universitario, Santiago de Compostela (A Coruña), España.
authors.forename: Marina
authors.initials: M
authors.lastname: Tarrazo
authors.affiliation: Subdirección de Información sobre Saúde e Epidemioloxía, Dirección Xeral de Innovación e Xestión da Saúde Pública, Consellería de Sanidade, Xunta de Galicia, Santiago de Compostela (A Coruña), España; Departamento de Medicina Preventiva y Salud Pública, Universidad de Santiago de Compostela, Santiago de Compostela (A Coruña), España. Electronic address: monica.perez.rios@usc.es.
authors.forename: Mónica
authors.initials: M
authors.lastname: Pérez-Ríos
authors.affiliation: Subdirección de Información sobre Saúde e Epidemioloxía, Dirección Xeral de Innovación e Xestión da Saúde Pública, Consellería de Sanidade, Xunta de Galicia, Santiago de Compostela (A Coruña), España.
authors.forename: María I
authors.initials: MI
authors.lastname: Santiago-Pérez
authors.affiliation: Subdirección de Información sobre Saúde e Epidemioloxía, Dirección Xeral de Innovación e Xestión da Saúde Pública, Consellería de Sanidade, Xunta de Galicia, Santiago de Compostela (A Coruña), España.
authors.forename: Alberto
authors.initials: A
authors.lastname: Malvar
authors.affiliation: Subdirección de Programas de Fomento de Estilos de Vida Saudables, Dirección Xeral de Innovación e Xestión da Saúde Pública, Consellería de Sanidade, Xunta de Galicia, Santiago de Compostela (A Coruña), España.
authors.forename: Jorge
authors.initials: J
authors.lastname: Suanzes
authors.affiliation: Subdirección de Información sobre Saúde e Epidemioloxía, Dirección Xeral de Innovación e Xestión da Saúde Pública, Consellería de Sanidade, Xunta de Galicia, Santiago de Compostela (A Coruña), España.
authors.forename: Xurxo
authors.initials: X
authors.lastname: Hervada
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000073865:Cigarette Smoking / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D004522:Educational Status; D066300:Electronic Nicotine Delivery Systems / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D016540:Smoking Cessation; D062789:Tobacco Products / Q000706:statistics & numerical data*; D064424:Tobacco Use / Q000639:trends*; D055815:Young Adult
keywords: Cigarrillos electrónicos; Cross-sectional study; Electronic cigarettes; Epidemiology; Epidemiología; Estudio transversal; Prevalence; Prevalencia; Productos del tabaco; Tobacco products