Table 3. Area under the ROC curve (AUC) for predictive indices in the derivation and valdation data sets.

Predictive Index	AUC (95% CI*) Derivation Data Set		AUC (95% CI) Validation Data Set
UT-AKI	0.77	(0.70, 0.83)	0.76	(0.70, 0.82)
ACEF [5]	0.68	(0.60, 0.75)	0.65	(0.58, 0.73)
AGEF [6]	0.63	(0.55, 0.70)	0.65	(0.58, 0.72)
McCullough [8]	0.49	(0.40, 0.57)	0.47	(0.37, 0.57)
Mehran [7]	0.68	(0.58, 0.76)	0.67	(0.59, 0.75)
NCDR [9]	0.65	(0.57, 0.73)	0.68	(0.61, 0.76)

*CI, confidence interval