I've just performed a stratified Cox regression and I'd like to know if there is
a sig diff between the survival curves for the strata. Is there any way I can
get a p-value in Stata 9?
otherwise I found a paper that discusses how to compute the p-value.
Sun et al, "Nonparametric test for stratum effects in the Cox model", Lifetime
Data Analysis, 6, 321-330 (2000)
Is there an easy way to implement their formula in Stata?
Thanks for any help.
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