Likelihood ratios and ROC-areas of combinations of multiple red traffic lights.

*P-value <0.05 (added value of e.g. ≥3 RTLs above ≥2 RTLs, by logistic regression analysis). LR: likelihood ratio (positive and negative). Sens: sensitiviteit; Spec: specificiteit; CI: confidence interval. #1. Colour: pale / mottled/ ashen/ blue; 2. No response to social cues; 3. Ill appearance; 4. Does not (stay) awake; 5. Weak/ high pitched/ continuous cry; 6. Grunting; 7. Tachypnoea; 9. Reduced skin turgor; 10. Age <3 m & temp ≥38°C; ∧8. Chest indrawing 11. Non-blanching rash; 12. Bulging fontanelle; 13. Neck stiffness; 14. Status epilepticus; 15. Focal neurologic symptoms; 16. Focal seizures.