Analysis of Maximum Likelihood Estimates      
Parameter Hazard 95% Hazard Ratio Confidence Limits  
  Ratio    
METASTATIC DISEASE AT DIAGNOSIS 6.13 4.01 9.37
PENETRATION OF THE BOWEL WALL 2.78 1.09 7.12
LYMPH NODE INVOLVEMENT 2.65 1.6 4.38
PERINEURAL INVASION 2.29 1.45 3.6
EMERGENT OPERATION 1.79 1.12 2.87
VASCULAR INVASION 1.78 1.18 2.68
INVOLVED SURGICAL MARGIN 2.09 0.95 4.6
HIGH GRADE DIFFERENTIATION 1.16 0.73 1.85
PERIOPERATIVE BLOOD TRANSFUSION 1.14 0.73 1.78
Table 2: Hazard ratio of death from colorectal cancer by clinical and pathological variables