title: [The consumption of alcohol, tobacco and drugs in adolescents].
abstract: OBJECTIVE
  To find how much alcohol, tobacco and drugs adolescents consume and identify some linked socio-family variables.
  
  
  METHODS
  A crossover and descriptive study, with randomised sampling stratified by classrooms.
  
  
  METHODS
  Secondary schools in the town of Lugo.
  
  
  METHODS
  805 students of both sexes from the secondary schools.
  
  
  RESULTS
  We used a self-filled anonymous semiclosed questionnaire. 34.6% habitually consumed alcohol, of whom 43.3% had got drunk at least once in the previous 6 months and 7.1% on more than 13 occasions. 25.7% were habitual smokers. 12.3% had consumed cannabis; 10.1% tranquilisers; 7.5% amphetamines; 4.6% sleeping pills; 2.1% cocaine; 1.9% LSD; 1.5% heroin. Variables linked to consumption were: age, repeating the school year, considering him/herself a bad student, fighting, consumption by both parents, not doing sports, having more money and not having a good relationship with parents.
  
  
  CONCLUSIONS
  Adolescent alcohol, tobacco and drug consumption is high and similar to other regions of Spain. Prevention strategies are needed, in the family, at school and in the media.
authors.affiliation: Unidad de Salud Mental, Lugo.
authors.forename: J
authors.initials: J
authors.lastname: Martínez Alvarez
authors.forename: J
authors.initials: J
authors.lastname: García González
authors.forename: M
authors.initials: M
authors.lastname: Domingo Gutiérrez
authors.forename: A J
authors.initials: AJ
authors.lastname: Machín Fernández
mesh_terms: D000293:Adolescent; D000428:Alcohol Drinking / Q000453:epidemiology*; D018592:Cross-Over Studies; D005260:Female; D006801:Humans; D008297:Male; D012907:Smoking / Q000453:epidemiology*; D013030:Spain / Q000453:epidemiology; D019966:Substance-Related Disorders / Q000453:epidemiology*