Table 3. Results of the multivariable logistic regression analyses in the derivation cohort (n = 1227) and the performance of the model in the validation cohort (n = 1194): predictors for RSV hospitalization after bootstrapping.
| Characteristics | RISK model | RISK point score | ||
| Regression coefficient | Odds ratio (95% CI) | p-value | ||
| Born Aug 14 th to Dec 1 st | 0.96 | 2.6 (1.6−4.2) | <0.001 | 5 |
| Presence of siblings or subject daycare attendance # | 1.65 | 4.7 (1.7−13.1) | 0.003 | 8 |
| Breast fed * 2months or not # | 0.51 | 1.7 (1.0−2.7) | 0.04 | 3 |
| Atopy in 1st degree family member | 0.67 | 1.9 (1.1−3.2) | 0.01 | 3 |
| Intercept | −4.20 | |||
| AUROC (95%CI) derivation cohort | 0.702 (0.64−0.76) | |||
| AUROC (95%CI) validation cohort | 0.678 (0.61−0.74) | |||
*
either exclusive breastfeeding or mixed with formula feeding # predicted by parents at birth.