Table 2. Comparison of APACHE II, GCS, and FOUR in Prediction of Delayed Mortality.

Score	Cut-Off Point	Specificity	Sensitivity	Youden Index	ROC Area
GCS	7	0.88	0.64	0.75	0.90 ± 0.03
FOUR	6	0.90	0.73	0.80	0.89 ± 0.03
APACHE II	17	0.90	0.75	0.88	0.94 ± 0.02

Abbreviations: APACHE II, acute physiology and chronic health evaluation II; GCS, glasgow coma scale; FOUR, full outline of unresponsiveness.