title: Assessment of smoking behaviors in the home and their influence on children's passive smoking: development of a questionnaire.
abstract: OBJECTIVE
  To construct and validate a questionnaire aiming to measure children's exposure to environmental tobacco smoke (ETS) in the home.
  
  
  METHODS
  The development of the instrument included epidemiological studies, qualitative interviews, pilot studies, and validation with biomarkers and is described in seven consecutive steps. Parents of preschool children, from different population-based samples in south-east Sweden, have participated in the studies.
  
  
  RESULTS
  Content and face validity was tested by an expert panel and core elements for the purpose of the instrument identified. Reliability was shown with test-retest of the first version. The validation with biomarkers indicated that the sensitivity of the instrument was high enough to discriminate between children's ETS exposure levels. Cotinine/creatinine levels were related to parents' described smoking behaviors. Differences were shown between children from non-smoking homes, and all groups with smoking parents, independent of their smoking behavior (p < 0.01), as well as between parents smoking strictly outdoors and parents reporting indoor smoking (p < 0.001).
  
  
  CONCLUSIONS
  The results indicate that the presented instrument can be used to discriminate between different levels of ETS exposure and when children's level of tobacco smoke exposure is to be assessed.
authors.affiliation: Division of Pediatrics, Department of Molecular and Clinical Medicine, Linköping University, SE-58183 Linköping, Sweden. anjoh@IMV.liu.se
authors.forename: AnnaKarin
authors.initials: A
authors.lastname: Johansson
authors.forename: Arne
authors.initials: A
authors.lastname: Halling
authors.forename: Göran
authors.initials: G
authors.lastname: Hermansson
authors.forename: Johnny
authors.initials: J
authors.lastname: Ludvigsson
mesh_terms: D000328:Adult; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010290:Parents; D012907:Smoking / Q000453:epidemiology*; D011795:Surveys and Questionnaires; D013548:Sweden / Q000453:epidemiology; D014028:Tobacco Smoke Pollution
chemical_list: D014028:Tobacco Smoke Pollution