From: Charles Willis <willis.charlie_at_gmail.com>
Date: Sat, 01 Mar 2008 18:38:47 -0500


I am running the program COMPAR.GEE within the package APE. My dependent variable is binomial, while my independent variable is a multi-state categorical variable. The output reports an estimate for each state of the independent variable except the first one. For example, for the variable X with 3 states, the output is:

intercept (estimate)

X2           (estimate)
X3           (estimate)

I have two questions: 1) Why does it not give me an intercept for the first variable and how do i get it; 2) can a get a general estimate of correlation, like a wald's statistic for the variable?

Thank you!


Charles G. Willis
Department of Organismic and Evolutionary Biology 22 Divinity Ave Cambridge MA 02139
HP (857) 488-2506
WP (617) 496-3890

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