Combinations of maternal smoking in pregnancy and paternal smoking after pregnancy in SIDS cases and controls with crude odds ratios (OR) in Scandinavia 1992 to 1995, the Nordic epidemiological SIDS study
| Mother smoked in pregnancy | Father smoked after pregnancy | Cases | Controls | OR | 95% CI | p | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No | % | No | % | ||||||||||||
| No | No | 74 | 31.8 | 462 | 54.4 | 1.0 | Reference | ||||||||
| No | Yes | 18 | 7.7 | 138 | 16.3 | 0.8 | 0.5 to 1.5 | 0.56 | |||||||
| Yes | No | 42 | 18.0 | 108 | 12.7 | 2.6 | 1.7 to 4.0 | <0.001 | |||||||
| Yes | Yes | 99 | 42.5 | 141 | 16.6 | 4.4 | 3.0 to 6.5 | <0.001 | |||||||
CI = confidence interval.