Table 1

Parental and other household smoking in SIDS cases and controls with crude and adjusted odds ratios (OR) in Scandinavia 1992 to 1995, the Nordic epidemiological SIDS study

Household smokingCasesControlsCrudeAdjusted for ageAdjusted for age,maternal age, and education1-150
No%No%OR95% CIpOR95% CIpOR95% CIp
Maternal smoking
 Before pregnancy15168.333641.43.02.2 to 4.1<0.0013.22.2 to 4.7<0.0012.51.7 to 3.7<0.001
 During pregnancy15061.725329.44.02.9 to 5.6<0.0014.53.1 to 6.6<0.0013.62.4 to 5.3<0.001
 After pregnancy14660.126330.73.82.8 to 5.3<0.0014.53.1 to 6.6<0.0013.72.5 to 5.5<0.001
Paternal smoking
 Before pregnancy11451.632240.01.61.2 to 2.10.0051.71.2 to 2.50.0030.80.5 to 1.20.26
 During pregnancy11950.631937.31.71.3 to 2.3<0.0011.81.2 to 2.50.0020.90.6 to 1.40.62
 After pregnancy11750.228433.22.01.5 to 2.8<0.0012.31.6 to 3.3<0.0011.20.8 to 1.90.30
Other smoking
 After pregnancy3314.0738.42.01.3 to 3.30.0042.11.2 to 3.60.0071.20.6 to 2.20.57
  • 1-150 Paternal and other smoking also adjusted for maternal smoking in pregnancy; CI = confidence interval.