Performance of PIM, PRISM, and PELOD scores in a resource-limited North Indian paediatric intensive care unit

Table 3 Age-stratified predictive performance of pediatric risk of mortality score III, pediatric index of mortality-3, and pediatric logistic organ dysfunction score-2 mortality scores

	PRISM-III	PIM-3	PELOD-2
Age group 1-12 months
mean ± SD	4.52 ± 5.48	4.85 ± 11.70	2.64 ± 2.75
median (interquartile range)	3 (1.5-6)	2.6 (1.9-3.1)	2 (2-3)
AUROC (95%CI)	0.856 (0.656-1.000)	0.845 (0.550-1.000)	0.883 (0.722-0.990)
Observed death (O)	7	7	7
Expected death (E)	7	6	7
SMR (O/E) 95%CI	1	1.2	1
HL χ2	1.55	7.07	1.72
P value	0.907	0.53	0.423
Age group 13-60 months
mean ± SD	5.61 ± 5.61	5.19 ± 13.74	2.26 ± 3.30
median (interquartile range)	4 (2.2-6.8)	2.3 (1.8-3.7)	1.5 (0-2)
AUROC (95%CI)	0.872 (0.701-1.000)	0.976 (0.925-1.000)	0.982 (0.938-1.000)
Observed death (O)	6	6	6
Expected death (E)	5	6	6
SMR (O/E) 95%CI	1.2	1	1
HL χ2	5.84	2.58	6.14
P value	0.441	0.958	0.105
Age group 61-120 months
mean ± SD	6.97 ± 6.20	2.87 ± 2.57	3.14 ± 3.69
median (interquartile range)	5 (2-10)	2.1 (1.4-3.7)	2 (0-6)
AUROC (95%CI)	0.812 (0.635-0.953)	0.884 (0.718-1.000)	0.783 (0.530-0.971)
Observed death (O)	6	6	6
Expected death (E)	6	5	6
SMR (O/E) 95%CI	1	1.2	1
HL χ2	7.65	12.06	4.17
P value	0.468	0.149	0.383
Age group > 120 months
mean ± SD	5.93 ± 5.06	5.41 ± 13.68	2.05 ± 2.77
median (interquartile range)	5 (2-7)	2.05 (1.6-3.55)	1 (0-3)
AUROC (95%CI)	0.849 (0.640-1.000)	0.764 (0.333-1.000)	0.879 (0.660-1.000)
Observed death (O)	5	5	5
Expected death (E)	5	4	5
SMR (O/E) 95%CI	1	1.3	1
HL χ2	10.06	8.99	4.02
P value	0.185	0.343	0.546

PELOD-2: Pediatric logistic organ dysfunction score-2; PRISM-III: Pediatric risk of mortality score III; PIM-3: Pediatric index of mortality-3; HL: Hosmer-Lemeshow; AUROC: Area under the receiver operating characteristic curve; CI: Confidence interval; SMR: Standardized mortality ratio.