The use of the Cox proportional hazards regression model is wide-spread. A key assumption of the model is that of proportional hazards. Analysts frequently test the validity of this assumption using statistical significance testing. However, the statistical power of such assessments is frequently ...
Cox Regression and the Violation of the Proportional Hazards Assumption in the Literature: Magnitude and EffectsZiogas, Ioannis
Statistical power to detect violation of the proportional hazards assumption when using the Cox regression modeldoi:10.1080/00949655.2017.1397151Peter Austin