Mario Cleves, www.stata.com/support/faqs/stat/stmfail.html, explains the
variance-covariance approach to analyze the multiple failure data. I have
a dataset with 26 subjects and multiple-failures for each subject and I
need to estimate a cox model with failty.
Does anyone know whether the following commands are correct to implement
a frailty model with multiple-failure data?
stset time, fail(event) id(country) exit(time .) origin(time0)
stgen nf=nfailure()
stcox grow trade deficit laggrowthexp diffrer, shared(nf) efron nohr
or should I use
stcox grow trade deficit laggrowthexp diffrer, shared(country) efron nohr
Thanks a lot for your suggestion
Giorgio
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