Duration of any breast feeding in Scandinavia among cases and controls with crude and adjusted odds ratios; the Nordic Epidemiological SIDS Study 1992–95
| Crude | Adjusted | |||||||
|---|---|---|---|---|---|---|---|---|
| Duration of breast feeding | Cases n | Controls n | OR | 95% CI | p value | OR | 95% CI | p value |
| Adjustment was made for smoking during pregnancy, paternal employment, sleeping position, and age of infant. | ||||||||
| 0–3 weeks | 44 | 53 | 9.8 | 5.4 to 17.7 | <0.001 | 4.6 | 1.9 to 11.1 | 0.001 |
| 4–7 weeks | 51 | 96 | 7.2 | 4.1 to 12.7 | <0.001 | 2.3 | 1.0 to 5.4 | 0.07 |
| 8–11 weeks | 59 | 160 | 4.5 | 2.7 to 7.5 | <0.001 | 1.0 | 0.4 to 2.2 | 0.96 |
| 12–15 weeks | 29 | 175 | 1.7 | 0.9 to 3.0 | 0.08 | 1.6 | 0.7 to 3.9 | 0.30 |
| 16+ weeks | 50 | 359 | 1.0 | ref. | – | 1.0 | ref. | – |