Re: 2-compartment model: V2 doesn't vary
From: "bvatul" <bvatul@ufl.edu>
Subject: Re: 2-compartment model: V2 doesn't vary
Date: Fri, 28 Sep 2001 15:23:59 -0400
Hello Stefan
A couple of things:
In sparse situation this can happen. You can fix the eta to say about 30%
and run your analysis. Check your parameter estimates (calculate half-life
etc) and see if they make any meaning. Also I was wondering why you changed
the default value of NSIG to 7. Can this make things difficult, I am not
sure! Such a low value of eta might mean you might be either
overparameterising or the data structure might be doing so!! You might want
to try simpler models.
Hope this helps
Atul