concordance of cox proportional hazards how does the ph assumption violate in a survival analysis what is the concordance of ph in cox proportional hazards how to use cox model in survival cox proportional hazards model hazard ratio what is the cox proportional hazards model can you get a good ph model in r which ph assumption is violated in survival analysis which model of survival has the highest concordance and which model has the highest hazard ratio?? jimoth, safo why is coxph a good fit r why is cox ph assumption violated which assumptions must be violated in a survival model for cox? what makes r survival models good what is the concordance of the coxph what is the ph assumption in cox what is the concordance of the survival model cox probability fit is cox Ph assumption violated what makes a cox model good fit how concordance is maintained in a coxph model