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...nd attached the file leukemia.dta I used (Stata) Here are the codes for R library(foreign) leukemia<-read.dta("leukemia.dta") library(survival) res <- coxph(Surv(TIME, STATUS)~TREAT, data=leukemia) summary(res) and here the codes for for stata use "leukemia.dta",clear stset TIME, failure(STATUS==1) stcox TREAT SPSS and EPIinfo give the same HR than Stata I tried with an other database without any problem What would be the problem??? I changed of pc and versions of R (2.81 & 2.9.0) without any change. The means are the same for the two packages. I saw a few pos...

Dear R users! I want to process a maximum likelihood estimation for a parametric regression survival time model with multiple events per subject. the STATA command for this survival regression is: use survreg stset failure(exercise), id(optionid) local regressors itm posret negret streg `regressors', distribution(weibull) explanation: stset declares data to be survival-time data; exercise is the indicator variable, which shows if the subject is dead or alive; optionid is the multiple-record ID variable w...

...aset > write.dta(dat3,"cleanBasel.dta") Warning message: Abbreviating variable names in: write.dta(dat3, "cleanBasel.dta") Here's the Stata output: . use "/home/pauljohn/ps/ps909/AdvancedRegression/duration_2/cleanBasel.dta" (Written by R. ) . stset yrs2, failure (ratify) failure event: ratify != 0 & ratify < . obs. time interval: (0, yrs2] exit on or before: failure ---------------------------------------------------------------------------- > -- 21 total obs. 0 exclusions ---------------------------...

Dear Community, I have been using two types of survival programs to analyse a data set. The first one is an R function called aftreg. The second one an STATA function called streg. Both of them include the same analyisis with a weibull distribution. Yet, results are very different. Shouldn't the results be the same? Kind regards, J -- View this message in context: