Table 4.

Correlation and AUC comparison between cAG and pre-existing mortality prediction models in PICU.

	Correlation coefficient	p-value	AUC (95% CI)	p-value
cAG	—	—	0.728 (0.666–0.789)	—
PIM2	0.183	0.0001	0.779 (0.722–0.837)	0.799
PIM3	0.182	0.0001	0.822 (0.767–0.877)	0.074
PRISM III	0.241	<0.0001	0.808 (0.755–0.861)	0.105

AUC, Area under the receiver operating characteristic curve; CI, confidence interval; cAG, corrected anion gap; PICU, pediatric intensive care unit; PIM, Pediatric Index of Mortality; PRISM III, Pediatric Risk of Mortality III.

Correlation is significant at the 0.01 level.