Validation of age-specific survival prediction in pediatric patients with blunt trauma using trauma and injury severity score methodology: a ten-year Nationwide observational study

Table 4 Observed-to-expected survivor ratio in each Ps interval by age categories

	Ps interval	Mean Ps	No. of patients	Observed survivors	Expected survivors	Observed / Expected
Total	0.96–1.00	0.991	15,258	15,248	15,121	1.01
	0.91–0.95	0.944	937	920	885	1.04
	0.76–0.90	0.858	844	777	724	1.07
	0.51–0.75	0.646	344	264	222	1.19
	0.26–0.50	0.398	190	110	76	1.45
	0.00–0.25	0.130	172	48	22	2.15
Neonates / Infants	0.96–1.00	0.987	238	237	235	1.01
	0.91–0.95	0.946	48	47	45	1.04
	0.76–0.90	0.864	29	26	25	1.04
	0.51–0.75	0.612	6	3	4	0.82
	0.26–0.50	0.384	5	2	2	1.04
	0.00–0.25	0.163	4	1	1	1.53
Preschool children	0.96–1.00	0.990	1882	1882	1863	1.01
	0.91–0.95	0.944	108	107	102	1.05
	0.76–0.90	0.859	116	103	100	1.03
	0.51–0.75	0.645	34	25	22	1.14
	0.26–0.50	0.391	21	14	8	1.71
	0.00–0.25	0.121	22	9	3	3.38
Schoolchildren	0.96–1.00	0.991	5325	5322	5277	1.01
	0.91–0.95	0.945	270	263	255	1.03
	0.76–0.90	0.859	214	200	184	1.09
	0.51–0.75	0.644	72	62	46	1.34
	0.26–0.50	0.391	30	17	12	1.45
	0.00–0.25	0.131	39	13	5	2.54
Adolescents	0.96–1.00	0.991	7813	7807	7743	1.01
	0.91–0.95	0.943	511	503	482	1.04
	0.76–0.90	0.857	485	448	416	1.08
	0.51–0.75	0.648	232	174	150	1.16
	0.26–0.50	0.401	134	77	54	1.43
	0.00–0.25	0.130	107	25	14	1.80

Ps survival probability, AUC area under the Receiver Operator Characteristic, CI confidence interval

ISSN: 1471-227X