Re: msg from atul
From: Nick Holford <n.holford@auckland.ac.nz>
Subject: Re: msg from atul
Date: Wed, 15 Nov 2000 10:01:37 +1300
Atul,
I suggest you fit the dense and sparse data simultaneously using FOCE INTERACTION (INTERACTION is essential with proportional error models). Try using different error model parameters for the dense and sparse data. Consider removing outlier concentrations if they do not look reasonable. Ignore the error message about root of the characteristic equation.
Good luck!
Nick
Nick Holford, Divn Pharmacology & Clinical Pharmacology
University of Auckland, 85 Park Rd, Private Bag 92019, Auckland, New Zealand
email:n.holford@auckland.ac.nz tel:+64(9)373-7599x6730 fax:373-7556
http://www.phm.auckland.ac.nz/Staff/NHolford/nholford.htm