Message-ID: <4403A99B.9040700@gis.usu.edu>
Date: 2006-02-28T01:38:35Z
From: Craig A Faulhaber
Subject: power and sample size for a GLM with Poisson response variable
In-Reply-To: <AF2DCD619279544BA454141F4A45B9E3F5E1F5@m-niosh-3.niosh.cdc.gov>
Thanks for the functions, James. I, too, did not understand the
"constraints" vector in asypow. Can anyone on the listserve explain this?
Craig
Wassell, James T., Ph.D. wrote:
> Craig, I found the package asypow difficult to use and it did not
> yield results in the ballpark of other approaches. (could not figure
> out the "constraints" vector).
>
> I wrote some simple functions, one asy.pwr uses the non-central
> chi-square distn.
>
>
--
Craig A. Faulhaber
Department of Forest, Range, and Wildlife Sciences
Utah State University
5230 Old Main Hill
Logan, UT 84322
(435)797-3892