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svetlana
2008 Dec 04
1
comparing SAS and R survival analysis with time-dependent covariates
...a tie b/w an event and a time-dependent observation, R
gives the same result as SAS.
tmp$end[2]=tmp$end[2] + .1
tmp
surv = Surv(time=tmp$start, time2=tmp$end, tmp$outcome)
cphres = coxph(surv ~ tmp$delir, method="exact")
summary(cphres)[["coef"]]
Thank you so much for time,
Svetlana
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