Evaluating the Proportional Hazards Assumption
We begin with a brief review of the characteristics of the Cox proportional hazards (PH) model. We then give an overview of three methods for checking the PH assumption: graphical, goodness-of-fit (GOF), and time-dependent variable approaches.
KeywordsProportional Hazard Assumption Graphical Approach Schoenfeld Residual Estimate Survival Probability Estimate Survival Curve
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