Practical Predictive Analytics

Cox regression modeling

KM tests can be satisfactory in many situations, especially during preliminary analysis; however, KM tests are non-parametric, and typically are less powerful than parametric equivalents. Cox regression extends survival analysis to a parametric regression type framework under which it assumes more power. If there are several independent variables that need to be incorporated into a model, and some of them are continuous, it is advantageous to perform cox proportional hazard modeling rather than KM.