Table 3. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for each high Modified Early Warning Score (hMEWS) cut-off score.

Day	Sensitivity, %	Specificity, %	PPV, %	NPV, %	Accuracy, %
0 (hMEWS > 2)	73.8	80.0	71.1	82.1	77.5
1 (hMEWS > 2)	68.8	90.8	83.3	81.0	82.0
2 (hMEWS > 2)	63.7	88.3	78.4%	78.5	78.5