The "anova" process is only statistically valid for nested models, i.e., where one includes the other as a proper subset. A model with continuous age and one with discrete age are not nested; your p-value will be meaningless.
Terry Therneau ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
