title: Effect of self-reported home smoking restriction on smoking initiation among adolescents in Taiwan: a prospective cohort study.
abstract: OBJECTIVE
  The aims of this study were to investigate the influence of home smoking restriction (HSR) and the modified effect of parental smoking on smoking initiation among adolescents.
  
  
  METHODS
  Prospective Cohort Study.
  
  
  METHODS
  Junior high school in Keelung City, Taiwan.
  
  
  METHODS
  This study collected and evaluated primary data from the Adolescent Smoking and Other Health-Related Behaviour Survey conducted in Keelung City, which aimed to investigate smoking and health-related behaviours in junior high school students (2008-2009). Data on students free of smoking in 2008 and following them until 2009 (n=901) to ascertain whether they had started smoking were analysed with logistic regression mode to examine the proposed postulates.
  
  
  METHODS
  The outcome variable was smoking initiation, which was defined as smoking status (yes/no) in the 2009 follow-up questionnaire. The main independent variable was HSR obtained from an adolescent self-reported questionnaire. Information on parental smoking was measured by adolescents self-reporting the smoking behaviour of their father and mother.
  
  
  RESULTS
  The rate of HSR was 29.79% among 7th grade adolescents. The effect of HSR on smoking initiation in adolescents was statistically significantly modified by paternal smoking (p=0.04) but not by maternal smoking (p=0.54). The effect of HSR on smoking initiation was small for fathers with the habit of smoking (OR=0.89, 95% CI (0.42 to 1.88)), but the corresponding effect size was 3.2-fold (OR=2.84, 95% CI 1.19 to 6.81) for fathers without the habit of smoking.
  
  
  CONCLUSIONS
  Paternal smoking behaviour may play an interactive role with HSR in preventing smoking initiation among Taiwanese adolescents.
authors.affiliation: School of Public Health, Chung Shan Medical University, Taichung, Taiwan Department of Family and Community Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan.
authors.forename: Dih-Ling
authors.initials: DL
authors.lastname: Luh
authors.affiliation: Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.
authors.forename: Hsiu-Hsi
authors.initials: HH
authors.lastname: Chen
authors.affiliation: School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.
authors.forename: Amy Ming-Fang
authors.initials: AM
authors.lastname: Yen
authors.affiliation: School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Wang
authors.affiliation: Department and Graduate Institute of Health Care Management, Chang Gung University, Taoyuan, Taiwan.
authors.forename: Sherry Yueh-Hsia
authors.initials: SY
authors.lastname: Chiu
authors.affiliation: Department of Health Industry Management, School of Healthcare Management, Kainan University, Taoyuan, Taiwan.
authors.forename: Ching-Yuan
authors.initials: CY
authors.lastname: Fann
authors.affiliation: School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.
authors.forename: Sam Li-Sheng
authors.initials: SL
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D010332:Paternal Behavior / Q000523:psychology*; D010379:Peer Group; D011446:Prospective Studies; D012907:Smoking / Q000453:epidemiology*; D016540:Smoking Cessation / Q000523:psychology*; D013624:Taiwan / Q000453:epidemiology; D014028:Tobacco Smoke Pollution / Q000009:adverse effects
chemical_list: D014028:Tobacco Smoke Pollution
keywords: PUBLIC HEALTH; SOCIAL MEDICINE