Crude and adjusted OR of SIDS according to different categories of smoking habits during pregnancy
| Total no. | No. with SIDS | ‰ |
Adjusted2-150
OR (95% CI) | |
| Non-smokers from 16 weeks gestation | 17536 | 8 | 0.5 | Reference |
| Smokers | 7450 | 12 | 1.6 | 3.5 (1.4–8.7) |
| 1–9 cigarettes/day | 3249 | 5 | 1.5 | 3.4 (1.1–10.3) |
| 10+ cigarettes/day | 4201 | 7 | 1.7 | 3.7 (1.3–10.1) |
↵2-150 Adjusted for maternal age.