title: [Smoking and alcohol use among Chilean teenagers aged 10 to 14 years].
abstract: BACKGROUND
  Smoking and alcohol use are risky behaviors that can start early in life.
  
  
  OBJECTIVE
  To determine the lifetime prevalence of tobacco and alcohol use in adolescents aged 10 to 14 years and related factors.
  
  
  METHODS
  A survey about smoking and alcohol use was answered by 1,392 teenagers aged 10 to 14 years (46% women) from seven schools in a small city near Santiago. Personal, family, and school factors were evaluated through self-report scales. Smoking and alcohol use, as dichotomous dependent variables, were defined as having consumed any of these substances throughout life. Prevalence was calculated as percentages with 95% confidence intervals. Association analyses were conducted using multivariable logistic regression models.
  
  
  RESULTS
  Six and eleven percent of participants reported having smoked and used alcohol in their life, respectively. Smoking was associated with age, having behavioral problems, mothers smoking, perceiving that parents had drug problems, and not living with both parents. Alcohol use was mainly associated with age, having behavioral problems, perceiving that other students consumed drugs, alcohol use by both parents, and perceiving a lack of family support.
  
  
  CONCLUSIONS
  Tobacco and alcohol use is highly prevalent in adolescents aged 10-14 years. There were common risk factors for smoking and alcohol use such as age and having behavioral problems, while other factors were more specific such as mothers smoking, or parental alcohol use.
authors.forename: Jorge
authors.initials: J
authors.lastname: Gaete
authors.forename: Esterbina
authors.initials: E
authors.lastname: Olivares
authors.forename: Cristian A
authors.initials: CA
authors.lastname: Rojas-Barahona
authors.forename: Manuel José
authors.initials: MJ
authors.lastname: Rengifo
authors.forename: Nicolás
authors.initials: N
authors.lastname: Labbé
authors.forename: Leticia
authors.initials: L
authors.lastname: Lepe
authors.forename: Magdalena
authors.initials: M
authors.lastname: Silva
authors.forename: Cynthia
authors.initials: C
authors.lastname: Yáñez
authors.forename: Mei-Yen
authors.initials: MY
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000437:Alcoholism / Q000453:epidemiology* / Q000209:etiology; D002648:Child; D002677:Chile / Q000453:epidemiology; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D012307:Risk Factors; D012309:Risk-Taking; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology*; D012959:Socioeconomic Factors; D013334:Students / Q000706:statistics & numerical data