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546774
2012 Feb 23
2
Survival analysis and comparing survival curves
Hei,
I have a one simple question which does not seem to be that simple as I
cannot find any solution/answer:
Is it possible to compare multiple survival curves in R with
survdiff-function when there is interaction term involved in predictor
variables (and this interaction is significant)?
Example:
survdiff(Surv(death,status)~treatment*gapsize)
R is making "problems" with it ie.e.