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  1. 1. An Evaluation of Methods for Assessing the Functional Form of Covariates in the Cox Model

    Magister-uppsats, Uppsala universitet/Statistiska institutionen

    Författare :Linnea Karlsson; [2016]
    Nyckelord :Cox model; martingale residuals; cumulative sums of martingale residuals; functional form; misspecification; smoothed scatterplots; supremum test;

    Sammanfattning : In this thesis, two methods for assessing the functional form of covariates in the Cox proportional hazards model are evaluated. The methods include one graphical check based on martingale residuals and one graphical check, together with a Kolmogorov-type supremum test, based on cumulative sums of martingale residuals. LÄS MER