Table 3:

Test Characteristics of the electronic PICU Warning Tool at each center and overall as compared with the original paper based tool.

Test Characteristics	CHOP	CCHMC	Overall	Paper Checklist
Sensitivity (95% CI)	32.4% (21.8–44.6%)	47.0% (35.6–58.3%)	40.3% (32.5–48.5%)	100.0%
Specificity (95% CI)	90.8% (89.8–91.6%)	79.3% (77.6–81.0%)	86.7% (85.8–87.6%)	97.7%
PPV (95% CI)	6.0% (4.3–8.3%)	8.0% (6.4–10.0%)	7.1% (5.9–8.6%)	17.3%
NPV (95% CI)	98.7% (98.4–98.9%)	97.5% (97.0–98.0%)	98.3% (98.1–98.5%)	100%
NNS (95% CI)	17 (12–23)	13 (10–16)	14 (12–17)	6