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Table 4 The observed and predicted hospital mortalities in the patient cohort

From: Predictors of hospital mortality in adult trauma patients receiving extracorporeal membrane oxygenation for advanced life support: a retrospective cohort study

  Class I Class II Class III Class IV
Indication of ECMO Respiratory failure (ISS ≤ 35) Shock/CA (ISS ≤ 35) Respiratory failure (ISS > 35) Shock/CA (ISS > 35)
Total Number 14 7 8 7
Death Number 2 3 4 6
Observed Mortality 14.3% 42.9% 50% 85.7%
Predicted Mortalitya 13.5% 44.3% 51.3% 84.2%
  1. aPredicted mortality: (y) = ℮X / (1 + ℮X). X = − 1.853 + 1.905 × (Injury severity score > 35) + 1.625 × (Shock/CA requiring VA-ECMO)