title: Exposure to secondhand smoke in the home and mental health in children: a population-based study.
abstract: OBJECTIVE
  To examine the association between exposure to secondhand smoke (SHS) in the home and mental health among children.
  
  
  METHODS
  Cross-sectional study of 2357 children representative of the Spanish population aged 4-12 years in 2011-2012. Duration of SHS exposure in children was reported by parents. Probable mental disorder was defined as a score>90th centile in the parental version of the Strengths and Difficulties Questionnaire (SDQ). Statistical analysis was performed with logistic regression and adjusted for sociodemographic variables, lifestyle, neighbourhood environment and family characteristics, including parental mental health.
  
  
  RESULTS
  Among study participants, 6.9% (95% CI 5.7% to 8.0%) were exposed to SHS in the home for <1 h/day and 4.5% (95% CI 3.5% to 5.5%) for ≥1 h/day. Compared to children not habitually exposed to SHS, the multivariate ORs for probable mental disorder were 1.49 (95% CI 0.85 to 2.62) for SHS exposure<1 h/day and 2.73 (95% CI 1.38 to 5.41) for SHS exposure≥1 h/day (p for linear trend=0.002). The corresponding ORs for attention-deficit and hyperactivity disorder (ADHD) were 2.18 (95% CI 1.30 to 3.64) for <1 h/day exposure and 3.14 (95% CI 1.63 to 6.04) for ≥1 h/day exposure (p for linear trend<0.001). No association was found between SHS and the rest of the components of the SDQ.
  
  
  CONCLUSIONS
  Among children, SHS exposure in the home during ≥1 h/day is associated with a higher frequency of mental disorder. This association was mostly due to the impact of SHS on ADHD.
authors: Department of Public Health Sciences, University of Miami Miller School of Medicine, Clinical Research Building, Miami, Florida, USA.
authors: Alicia
authors: A
authors: Padrón
authors: National Centre for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid/IdiPAZ, Madrid, Spain.
authors: Iñaki
authors: I
authors: Galán
authors: Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid/IdiPAZ, Madrid, Spain CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain.
authors: Esther
authors: E
authors: García-Esquinas
authors: Tobacco Control Unit, Cancer Prevention and Control Program, Institut Català d'Oncologia-ICO, L'Hospitalet de Llobregat, Barcelona, Spain Cancer Control and Prevention Group, Institut d'Investigació Biomèdica de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain Department of Clinical Sciences, Universitat de Barcelona, Campus de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain.
authors: Esteve
authors: E
authors: Fernández
authors: Tobacco Control Unit, Cancer Prevention and Control Program, Institut Català d'Oncologia-ICO, L'Hospitalet de Llobregat, Barcelona, Spain Cancer Control and Prevention Group, Institut d'Investigació Biomèdica de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain.
authors: Montse
authors: M
authors: Ballbè
authors: Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid/IdiPAZ, Madrid, Spain CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain.
authors: Fernando
authors: F
authors: Rodríguez-Artalejo
mesh_terms: D000367:Age Factors; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D002648:Child; D002652:Child Behavior; D002657:Child Development; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006306:Health Surveys; D006798:Housing; D006801:Humans; D019570:Inhalation Exposure / Q000009:adverse effects*; D016014:Linear Models; D016015:Logistic Models; D008297:Male; D008603:Mental Health; D015999:Multivariate Analysis; D016017:Odds Ratio; D010290:Parents / Q000523:psychology; D015995:Prevalence; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects* / Q000453:epidemiology / Q000523:psychology; D012959:Socioeconomic Factors; D013030:Spain / Q000453:epidemiology; D013997:Time Factors; D014028:Tobacco Smoke Pollution / Q000009:adverse effects*
chemical_list: D014028:Tobacco Smoke Pollution
keywords: Prevention; Priority/special populations; Secondhand smoke; Smoking Caused Disease