Skip to main content

Table 1 Description of the analysis population

From: Exposure to second-hand smoke and direct healthcare costs in children – results from two German birth cohorts, GINIplus and LISAplus

Characteristic Classification/annotation GINIplus and LISAplus study population analysed (n = 3,518)
   N Mean (SD) or (%)
Age Mean (SD) 3,518 10.1 (0.20)
Sex Boys 1,802 (51.2%)
  Girls 1,716 (48.8%)
Study region Munich 1,796 (51.1%)
  Wesel 1,162 (33.0%)
  Bad Honnef 190 (5.4%)
  Leipzig 370 (10.5%)
Net household income (€) Up to 1,500 250 (7.1%)
  1,500 - < 2,500 891 (25.3%)
  2,500 - < 3,500 1,064 (30.2%)
  3,500 and above 1,313 (37.3%)
Poverty status of household relative to median equivalence income in Germany 2007 Up to 60% of median income 555 (15.8%)
  60-100% of median income 1,246 (35.4%)
  More than 100% of median income 1,717 (48.8%)
Education of the mother Low (<10 years) 326 (9.3%)
  Medium (=10 years) 1,389 (39.5%)
  High (>10 years) 1,803 (51.3%)
Education of the father Low (<10 years) 635 (18.1%)
  Medium (=10 years) 837 (23.8%)
  High (>10 years) 2,046 (58.2%)
Education of the parents Low (<10 years) 181 (5.1%)
  Medium (=10 years) 943 (26.8%)
  High (>10 years) 2,394 (68.1%)
Single parent No 3,142 (89.3%)
  Yes 376 (10.7%)
Child’s exposure to tobacco smoke No exposure 752 (21.4%)
  Not at home, but at other places 825 (23.5%)
  At home (patio/balcony) 1,340 (38.1%)
  At home (indoors) 601 (17.1%)
  1. SD: standard deviation.