Sounds like a hierarchical linear model. A nice tutorial on how to do
these analyses using SAS PROC MIXED is in Statistics in Medicine
On 21 Apr 00 15:02:55 GMT, klemke@JHSPH.EDU (Klaus Lemke) wrote:
>I used proc genmod with a repeated statement to account for clustering at a
>single level. Now i like to know how to expand this model to account for
>clustering at two levels. Can this be done with genmod and the repeated
>In my example, patients are clustered within providers who in turn are
>assigned to clinics. My dependent variable is whether or not a patient
>self-referred (as opposed to being MD-referred).
>model selfref=... /d=binomial;
>repeated subject=provider /type=exch;
>My question is how to account for the correlation of providers within clinics.