Duration of exclusive 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 | 74 | 102 | 10.4 | 6.0 to 17.8 | <0.001 | 5.1 | 2.3 to 11.2 | <0.001 |
| 4–7 weeks | 56 | 113 | 8.4 | 4.7 to 14.9 | <0.001 | 3.7 | 1.6 to 8.4 | 0.002 |
| 8–11 weeks | 47 | 149 | 5.2 | 3.0 to 9.3 | <0.001 | 1.6 | 0.7 to 3.6 | 0.27 |
| 12–15 weeks | 27 | 153 | 2.2 | 1.2 to 4.0 | 0.012 | 2.8 | 1.2 to 6.8 | 0.021 |
| 16+ weeks | 35 | 324 | 1.0 | ref. | – | 1.0 | ref. | – |