Table 5.

NRI and IDI for assessing improvement in mortality prediction after incorporating cAG to pre-existing mortality prediction models in PICU.

	NRI		IDI
	Value (SE)	p-value	Value (SE)	p-value
PIM2 with cAG	0.175 (0.053)	0.001	0.079 (0.018)	<0.001
PIM3 with cAG	0.167 (0.054)	0.002	0.073 (0.018)	<0.001
PRISMIII with cAG	0.094 (0.046)	0.043	0.052 (0.014)	<0.001

NRI, Net Reclassification Improvement; IDI, Integrated Discrimination Improvement; cAG, corrected anion gap; PICU, pediatric intensive care unit; SE, standard error; PIM, Pediatric Index of Mortality; PRISM III, Pediatric Risk of Mortality III.