Table 3.
Relative risk of SIDS associated with DTPP±Hib immunization and with other factors.
| Proportion (%) of: | Multivariate analysis | ||
|---|---|---|---|
| Cases | Controls | Odds ratio (95% CI) | |
| DTPP±Hib immunization | |||
| no | 100/114 (88) | 294/341 (86) | 1 |
| yes | 14/114 (12) | 47/341 (14) | 1.08 (0.49, 2.36) |
| Usual sleeping position | |||
| side or back | 64/114 (56) | 310/341 (91) | 1 |
| prone | 50/114 (44) | 31/341 (9) | 9.8 (5.8, 9.9, 18) |
| Birth weight | |||
| ≥ 2500 g | 98/113 (87) | 333/341 (98) | 1 |
| < 2500 g | 15/113 (13) | 8/341 (2) | 6.53 (2.29, 18.9) |
| Illness the week before death | |||
| no | 69/114 (61) | 279/341 (82) | 1 |
| yes | 45/114 (39) | 62/341 (18) | 3.44 (1.84, 6.41) |
| Type of mattress | |||
| firm | 64/97 (66) | 300/341 (88) | 1 |
| not firm | 33/97 (34) | 41/341 (12) | 3.26 (1.69, 6.29) |
| Maternal tobacco consumption | |||
| no | 55/99 (56) | 232/340 (68) | 1 |
| yes | 44/99 (44) | 108/340 (32) | 1.72 (0.95, 3.11) |
| Sex | |||
| male | 70/114 (61) | 210/341 (62) | 1 |
| female | 44/114 (39) | 131/341 (38) | 1.16 (0.64–2.11) |
| Breastfed at birth | |||
| no | 74/111 (67) | 181/341 (53) | 1 |
| yes | 37/111 (33) | 160/341 (47) | 0.55 (0.3–1) |