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Table 3 Observed vs Expected Mortality

From: One-year and three-year mortality prediction in adult major blunt trauma survivors: a National Retrospective Cohort Analysis

    1-year survival probability 3-year survival probability
All adults Overall Expected 0.82 0.79
  Observed 0.93 0.84
Non-Low Fall Expected 0.83 0.80
  Observed 0.98 0.94
Low Fall Expected 0.77 0.72
  Observed 0.86 0.72
Head and Neck AIS < 3 Expected 0.82 0.80
  Observed 0.96 0.90
Head and Neck AIS > =3 Expected 0.81 0.78
  Observed 0.91 0.80
Aged 55 and over Overall Expected 0.93 0.85
  Observed 0.89 0.76
Non-Low Fall Expected 0.97 0.90
  Observed 0.96 0.88
Low Fall Expected 0.90 0.81
  Observed 0.85 0.70
Head and Neck AIS < 3 Expected 0.94 0.88
  Observed 0.93 0.81
Head and Neck AIS > =3 Expected 0.93 0.83
  Observed 0.87 0.74
CCI 0–1 Expected 0.95 0.88
  Observed 0.91 0.80
CCI > =2 Expected 0.83 0.70
  Observed 0.77 0.58