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re: st: Package -r2c- now available in SSC

From   "Ariel Linden, DrPH" <>
To   <>
Subject   re: st: Package -r2c- now available in SSC
Date   Sun, 3 Feb 2013 10:57:33 -0500

Interesting program, Joseph. Can you provide some explanation of how the
results from -r2c- complement (or contrast) the measures tested by
-countfit- ( a user-written program by J. Scott Long and Jeremy Freese
-findit countfit-)?


Date: Sat, 2 Feb 2013 10:42:03 -0500
From: Joseph Luchman <>
Subject: st: Package -r2c- now available in SSC

Thanks to Kit Baum, package -r2c- has been uploaded to SSC.

To install, write -ssc install r2c-

r2c: Stata module computes several goodness of fit measures for count
data models.

- -r2c- calculates r-square indexes based on deviance, pearson deviance,
squared correlation,  and explained variance following a poisson,
tpoisson, zip, nbreg, tnbreg, zinb, gnbreg, or glm (with
family(poisson) or family(nbinomial)).

The indexes computed by the r2c command derive from  Cameron and
Windmeijer (Journal of Business & Economic Statistics, 1996).

- -r2c- requires Stata 12.1.

- - Joseph

Joseph Nicholas Luchman, M.A.
- ----
Senior Research Associate | Fors Marsh Group
Desk: 571 858 3770
- ----
Doctoral Candidate
Industrial Organizational Psychology
George Mason University

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