Date:         Mon, 23 Jul 2007 10:09:42 -0700
Reply-To:     Paige Miller <paige.miller@KODAK.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Paige Miller <paige.miller@KODAK.COM>
Organization: http://groups.google.com
Subject:      Fisher's Exact Test vs Generalized Linear Models
Comments: To: sas-l@uga.edu
Content-Type: text/plain; charset="iso-8859-1"

I have a binary response variable as the results of a simple designed
experiment. The experiment could be either a one-factor experiment
with k levels of the independent variable, or it might be a two-factor
experiment with k1 and k2 levels of the independent variables.

In either case, I can run Fisher's exact test or I can fit a
generalized linear model. In SAS, you would use PROC FREQ for Fisher's
exact test, or you can fit the generalized linear model with PROC
GENMOD.

Fisher's exact test and the generalized linear model test do not seem
to give the same results when you test to see if the factor(s) have an
effect.

I am hoping someone can explains the pros and cons of each test, or
point me to a reference.

--
Paige Miller
paige\dot\miller \at\ kodak\dot\com