title: Parental smoking and infant respiratory infection: how important is not smoking in the same room with the baby?
abstract: OBJECTIVE
  We sought to quantify the effect of good smoking hygiene on infant risk of respiratory tract infection in the first 12 months of life.
  
  
  METHODS
  A cohort of 4486 infants in Tasmania, Australia, was followed from birth to 12 months of age for hospitalization with respiratory infection. Case ascertainment was 98.2%.
  
  
  RESULTS
  Relative to the infants of mothers who smoked postpartum but never in the same room with their infants, risk of hospitalization was 56% (95% confidence interval [CI] = 13%, 119%) higher if the mother smoked in the same room with the infant, 73% (95% CI = 18%, 157%) higher if the mother smoked when holding the infant, and 95% (95% CI = 28%, 298%) higher if the mother smoked while feeding the infant.
  
  
  CONCLUSIONS
  Parents who smoke should not smoke with their infants present in the same room.
authors.affiliation: Menzies Centre for Population Health Research, University of Tasmania, Hobart, Australian Capital Territory, Australia. leigh.blizzard@utas.edu.au
authors.forename: Leigh
authors.initials: L
authors.lastname: Blizzard
authors.forename: Anne-Louise
authors.initials: AL
authors.lastname: Ponsonby
authors.forename: Terence
authors.initials: T
authors.lastname: Dwyer
authors.forename: Alison
authors.initials: A
authors.lastname: Venn
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Cochrane
mesh_terms: D000328:Adult; D015331:Cohort Studies; D004781:Environmental Exposure / Q000009:adverse effects*; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006798:Housing; D006801:Humans; D007223:Infant; D007224:Infant Care / Q000592:standards*; D007229:Infant Welfare; D007231:Infant, Newborn; D009034:Mother-Child Relations; D009035:Mothers / Q000706:statistics & numerical data; D012141:Respiratory Tract Infections / Q000453:epidemiology* / Q000209:etiology; D018570:Risk Assessment; D012307:Risk Factors; D013648:Tasmania / Q000453:epidemiology; D014028:Tobacco Smoke Pollution / Q000009:adverse effects*
chemical_list: D014028:Tobacco Smoke Pollution