Table 5.
Details for infant* | Infants who died (n=312) | Controls (n=1295) | Multivariate odds ratio (95% CI) | P value |
---|---|---|---|---|
Solitary sleeper | 111 (35.6) | 419 (32.4) | 1.96 (1.31 to 2.93) | 0.001 |
Bed sharer (put back in cot) | 24 (7.7) | 178 (13.7) | 0.60 (0.33 to 1.08) | 0.09 |
Bed sharer (at end of sleep) | 79 (25.3) | 186 (14.4) | 1.35 (0.83 to 2.20) | 0.23 |
Sofa sharer | 20 (6.4) | 6 (0.5) | 25.86 (6.72 to 99.47) | <0.0001 |
Parental tiredness† | 86 (27.6) | 191 (14.7) | 2.42 (1.61 to 3.63) | <0.0001 |
Maternal alcohol consumption‡ | 37 (11.9) | 41 (3.2) | 3.40 (1.88 to 6.16) | <0.0001 |
Overcrowding§ | 13 (4.2) | 4 (0.3) | 18.49 (3.62 to 94.48) | 0.0005 |
Duvet tog: | ||||
1-4 | 37 (11.9) | 139 (10.7) | 1.47 (0.90 to 2.39) | 0.12 |
5-8 | 59 (18.9) | 91 (7.0) | 3.97 (2.43 to 6.46) | <0.0001 |
⩾9 | 26 (8.3) | 32 (2.5) | 3.26 (1.54 to 6.90) | 0.002 |
Reference group for sleeping environment (first four variables) was infants who shared room, reference group for duvet thickness (last three variables) was infants who did not use duvet.
Defined as longest period of infant sleep in previous 24 hours before last sleep: >4 v ⩽4 hours).
>2 units of alcohol in 24 hours before last or reference sleep.
Defined as >2 people per room (excluding kitchen not used for dining, toilet, bathroom, and hallways).