[R] Multiple events Cox's model and proportional hazards
nvanzuydam at gmail.com
Thu Sep 1 10:34:45 CEST 2011
I am using the survival package to perform a Cox's regression analysis on
multiple events of myocardial infarctions. I have been using the Andersen
and Gill model:
I was just wondering if this model should satisfy proportional hazards
assumptions. I have run the cox.zph function and the age parameter
violates the proportional hazards? What would be the best way to construct
this model. Should I include time dependent covariates?
Natalie Van Zuydam
University of Dundee
nvanzuydam at dundee.ac.uk
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