Likelihood Ratio test statistic Wald test statistic    
    (P-Value) (P-Value) R2  
Models p     (Max.Possible) Concordance
Cox Proportional Hazard 16 264.3(0.000) 181.3(0.000) 0.420(0.923) 0.891
Semiparametric Gamma Frailty 19 283.0 (0.000) 185.0(0.000) 0.442(0.923) 0.915
Where: P = Number of parameter estimated
Table 7: Testing the Overall Fit of Cox Proportional Hazard and Semiparametric Gamma Frailty Models.