Table 4
Five-year estimated disease-specific survival (DSS) in 86 colon cancer patients undergoing curative surgery according to Dukes’ stage and different molecular patterns

Estimates of the 5-year DSS probability were calculated by the following formula: *S*(5 year, z) = [*S*_{0} (5 year)]^{exp(β1 z1 + β2 z2 + β3 z3)}, where *S*(5 year, z) is the 5-year survival probability for covariate vector z; z is a given covariate combination; z1, z2, and z3 are the values of p27, p53, and VEGF codified as negative (0) or positive (1), respectively; β1 is the regression coefficient for p27 and equals 2.4186; β2 is the regression coefficient for p53 and equals 1.3273; and β3 is the regression coefficient for VEGF and equals 0.9100; *S*_{0} is the estimated baseline DSS at 5 years for each stratum of Dukes’ stage.