Confounders for the determination of the well known risk factors for SIDS
| Cases | Controls | Odds ratio (95% CI) | |
|---|---|---|---|
| Mean (SD) age of the infant (months) | 7 (5) | 10 (5) | 0.88 (0.79 to 0.98) |
| Secondary prone sleeping3-150 | 29 (41%) | 31 (21%) | 21.94 (5.66 to 85.03) |
| Placed to sleep | |||
| Supine | 39 (55%) | 125 (87%) | 1 |
| On side | 15 (21%) | 11 (8%) | 20.39 (3.77 to 110.12) |
| Prone | 17 (24%) | 7 (5%) | 22.94 (5.38 to 97.77) |
| Duvet used | 39 (55%) | 68 (46%) | 0.38 (0.13 to 1.10) |
| Head/body covered | 19 (28%) | 2 (2%) | 7.33 (0.31 to 174.72) |
| Duvet used and head/body covered | 17 (25%) | 1 (1%) | 25.79 (2.59 to 256.58) |
| Use of sleeping sack | 13 (19%) | 57 (40%) | 0.51 (0.15 to 1.74) |
| Placed to sleep with a dummy (pacifier) | 9 (12%) | 70 (48%) | 0.06 (0.01 to 0.25) |
↵3-150 On last occasion not placed prone, but found prone.