Regression Diagnostics

Abstract

In Chapters 8 and 9, methods for analyzing semiparametric proportional hazards models were presented. In Chapter 10, the alternative additive hazards regression model was presented. In these chapters, the focus was on estimating and testing covariate effects assuming that the model was correctly chosen. Only limited checks of the assumptions were made. A check of the proportional hazards assumption in the Cox model with a constructed time-dependent covariate was used. In this chapter, we shall look at a series of regression diagnostics for both models, based on residual plots.