Date: Thu, 26 Apr 2007 16:30:39 -0400
Reply-To: Mike Todd <mtodd@PREV.ORG>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Mike Todd <mtodd@PREV.ORG>
Subject: Multilevel poisson with overdispersion in NLMIXED?
I'm trying to run an analysis in NLMIXED that parallels that specified by
the following GLIMMIX code:
proc glimmix data=a noclprint;
class sch_id stud_id;
/s ddfm=bw dist=poisson;
In this simple model, we have students nested within schools, and we are
predicting (student-level) y from (student-level) x, and specifying a random
component for school-level intercept and extra-Poisson variability in the
Is such a specification possible in NLMIXED? If so, how would I go about
setting such a model up?
Thanks for any help you can provide.