Multivariate association between risk variables and overall and idiopathic ALTE
| Variable | Overall ALTE RR (95% CI) | p value | Idiopathic ALTE RR (95% CI) | p value |
|---|---|---|---|---|
| Relative risks (RR) and 95% confidence intervals (95% CI) were estimated from logistic regression modelling. The multivariate analyses were fitted with a forward-stepwise selection procedure allowing for all variables in table 1 except for mother’s educational level which was available in a subgroup only. Seven and four variables, respectively, met the selection criteria (p value for entry: p<0.10; p value for removal: p<0.15). | ||||
| Single parenthood | 2.2 (1.3 to 3.6) | 0.003 | ||
| Family history of infant death | 1.7 (0.9 to 3.0) | 0.094 | ||
| Smoking during pregnancy | 1.6 (1.1 to 2.6) | 0.036 | ||
| Repeated apnoea episodes | 7.0 (3.9 to 12.3) | <0.001 | 10.0 (4.5 to 21.8) | <0.001 |
| Remarkably pallid | 2.3 (1.3 to 4.1) | 0.005 | 2.1 (0.9 to 4.9) | 0.098 |
| Cyanotic episodes | 4.1 (2.3 to 7.2) | <0.001 | 3.2 (1.4 to 7.6) | 0.008 |
| Feeding difficulties | 2.2 (1.4 to 3.4) | <0.001 | 2.5 (1.3 to 4.6) | 0.005 |