Replace Design with rms (for general reasons not related to your question;
Design is about to be obsolete).
Negate Dxy. The linear predictor for the Cox model is relative log
hazard. Higher hazard means shorter survival time. For other survival
models the model is stated in terms of surv
Dear professor,
I am currently using Design package and the cph formula for assessing
multivariable analysis.
I am tryng to get the C-index for my survival model based on Dxy
coefficient.
I am confused since there is a negative value.
Do I need to used the absolute Dxy ?
index
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