When reading about surv(). I saw the following statement "Although unusual, the event indicator can be omitted, in which case all subjects are assumed to have an event."
So I tried the following 1. survobj<-surv(mydata$Time) vs. 2. survobj<-surv(mydata$Time, mydata$Event) where mydata$Event is a column of all ones. I did not get the same answer when I ran survreg(survobj~shift, data=mydata) on each. The second case actually failed to converge. I then tried a column of all zeros just to make sure I wasn't misreading something but still got the warning message failed to converge. Can anyone explain what exactly R is doing for case 1? -- View this message in context: http://r.789695.n4.nabble.com/Creating-a-survival-object-with-and-without-an-event-indicator-tp4605945.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
