Comparison between OR for risk factors for SIDS in the NESS (full Scandinavian data) and the Medical Birth Registry of Sweden 1993–1996
| NESS (1992–1995) | MBR (1993–1996) | ||||
|---|---|---|---|---|---|
| Risk factor | OR | 95% CI | OR | 95% CI | |
| Male sex | 1.8 | 0.6, 4.9 | 1.2 | 0.9, 1.7 | |
| Birth weight <2500 g | 9.3 | 5.1, 17 | 5.7 | 3.8, 8.7 | |
| Gestation <37 weeks | 5.7 | 3.5, 9.4 | 4.8 | 3.2, 7.2 | |
| Smoking 10+ cig/day in early pregnancy | 12.3 | 5.6, 27.0 | 9.6 | 6.5, 14.0 | |
| Maternal age <20 years | 3.7 | 1.6, 8.9 | 3.1 | 1.5, 5.6 | |
| Not cohabitating parents | 2.9 | 1.7, 5.0 | 3.1 | 1.9, 5.1 | |