Hi folks;
I have a data set with repeated event times and want to explore the Fixed-Effect Partial Likelihood with the help of strata. I submit the following code and get the error "Floating Point Zero Divide".
proc phreg data =test multipass nosummary ;
CLASS mar emp(ref='UNKNOWN') agents admsource ;
model rtime * rstatus (0) = mar emp agents admsource seq/ ties=efron;
strata id / missing ;
run;
any helpful comments would be appreciative.
Thanks!
Issac
Message was edited by: issac shams I am working with SAS9.3.
That article indicates that the "ties" problem was fixed in SAS 9. You say you are running SAS 9.3, so this is either a new problem (most likely) or your data exhibits a structure that isn't handled by the fix.
Is that the only error you get? That sounds undesireable. Consider opening a track with SAS Technical Support: http://support.sas.com/ctx/supportform/createForm
Yes it is. I found something related to this but not sure whether the problem is caused by ties handling or not?
That article indicates that the "ties" problem was fixed in SAS 9. You say you are running SAS 9.3, so this is either a new problem (most likely) or your data exhibits a structure that isn't handled by the fix.
As I know the data set contains a lot of class variables which can be handled by CLASS statement and there is nothing wrong with the it. So I may want to submit a SAS Technical Report.
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