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carretto
2010 Apr 19
2
Kaplan-Meier survfit problem
When I try to the code from library(survival) of library(ISwR),
the following code
survfit(Surv(days,status==1))
that could produce Kaplan-Meier estimates shows the following error
"Error in survfit(Surv(days, status == 1)) :
Survfit requires a formula or a coxph fit as the first argument"
How it can be done in R.2.10
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