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

From: 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

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