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2006 Jan 03
0
cox model
I'm a french medicine student and i work on oncology. I work about
treatment oh breast cancer. I have 3 sub group of patient. I made some
kaplan meyer survival curve, and i made a cox model.
On the survival curve, on the last observations there is a crossmatch of
the different survival curve at 150 month .
I study the validity of my model by study of residual by study the
proportional risk. So i used Coxzph formula, but the global test is p<
0.05, so my model is not a proportional risk.
Do you know how i can cut the cox model analysis before the 15...