Table 3

Predicted versus observed mortality in the entire cohort based on original GAP index

YearPatients (N)Predicted mortality* (%)Observed mortality† (%)Ratio‡
Stage I§
 1965.61.90.34
 26810.95.60.51
 35016.312.00.74
Stage II§
 120716.212.80.79
 213129.925.90.87
 38542.137.50.89
Stage III§
 19439.230.70.78
 25562.145.70.74
 33076.860.60.79
  • *Based on reported values by Ley et al.5

  • †Based on Kaplan-Meier estimates of mortality in our cohort.

  • ‡Ratio of observed to predicted mortality.

  • §Stages as defined by Ley et al.5

  • GAP, gender-age-physiology.