One ETA...for which parameter?

From: "Eyas Abu-Raddad" <raddade@mail.rx.uga.edu> Subject: One ETA...for which parameter? Date: Tue, 8 May 2001 01:59:52 -0400 Sometimes, having more than one ETA in the model makes the model over parameterized, given the data. Placing this ETA with different parameters produces a set of different parameter estimates. How can we interpret those parameters? Which set is true? What is the meaning of this "lump sum" interindividual variability parameter (ETA)? Regards, Eyas Abu-Raddad University of Georgia