title: Smoking mothers and snuffing fathers: behavioural influences on youth tobacco use in a Swedish cohort.
abstract: OBJECTIVE
  To analyse the influences of parental use of cigarettes and snus (the Swedish variety of smokeless tobacco) on offspring's behaviour.
  
  
  METHODS
  Prospective cohort study.
  
  
  METHODS
  The Stockholm County of Sweden.
  
  
  METHODS
  2232 adolescents recruited in the fifth grade (mean age 11.6 years) with follow up in the eighth grade.
  
  
  METHODS
  Self reported tobacco use (ever and current use of cigarettes and/or snus) in the eighth grade.
  
  
  RESULTS
  Parents' tobacco use was associated with adolescents' current use of cigarettes and snus (odds ratio (OR) 2.7, 95% confidence interval (CI) 1.8 to 3.9 if both parents used tobacco v neither parent). Mother's cigarette smoking was associated with adolescents' current exclusive smoking (OR 2.4, 95% CI 1.6 to 3.6). Father's use of snus was associated with current exclusive use of snus among boys (OR 3.0, 95% CI 1.4 to 6.4), but not with current cigarette use. The overall prevalence of current smoking was lower among children whose fathers used snus than among those whose fathers smoked.
  
  
  CONCLUSIONS
  Parental smoking, especially maternal smoking, enhances the risk of tobacco experimentation in youths, as does paternal use of smokeless tobacco. However, the transition to regular cigarette smoking is not likely to be affected by paternal use of smokeless tobacco. Contextual factors, in particular declining smoking trends and negative social acceptance of smoking, can explain most of these findings.
authors.affiliation: Division of Epidemiology, Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden. ingvar.rosendahl@smd.sll.se
authors.forename: K I
authors.initials: KI
authors.lastname: Rosendahl
authors.forename: M R
authors.initials: MR
authors.lastname: Galanti
authors.forename: H
authors.initials: H
authors.lastname: Gilljam
authors.forename: A
authors.initials: A
authors.lastname: Ahlbom
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D002648:Child; D016241:Child of Impaired Parents / Q000523:psychology*; D005220:Fathers / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D009035:Mothers / Q000523:psychology; D010287:Parent-Child Relations; D011446:Prospective Studies; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology / Q000523:psychology*; D013548:Sweden / Q000453:epidemiology; D014029:Tobacco Use Disorder / Q000453:epidemiology / Q000523:psychology*; D014030:Tobacco, Smokeless