topic Re: How do I create Multi-level hierarchical cox regression model? in SAS Procedures

How do I create Multi-level hierarchical cox regression model?

NT — Thu, 04 Feb 2016 15:43:46 GMT

Hello,

I have a question regarding hierarchical cox regression model.

When you have two variables for clustering, for example hospital and physician, and want to do time-to-event analysis,

is the following code appropriate? If not, is there any statement or procedure for this analysis?

PROC PHREG data=DATANAME covs(aggregate) covm;
model TIME.*EVENT(0)= Variables /
rl ;
id hospital Physician;
;
run;

Re: How do I create Multi-level hierarchical cox regression model?

Rick_SAS — Thu, 04 Feb 2016 17:28:04 GMT

The ID statement specifies variables that identify observations in plots and in output data sets, but the ID variable doesn't change the analysis.

From what little information you've provided, I suggest you look at the "Analysis of Clustered Data" example in the PHREG documentation, which uses a RANDOM statement. The doc for the RANDOM statement explains the statistical details of the model that is fit when you use the RANDOM statement.

Re: How do I create Multi-level hierarchical cox regression model?

NT — Thu, 04 Feb 2016 18:47:00 GMT

Dear Rick_SAS,

Thank you very much for your reply.

I will take a look at the website.