Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

Re: st: Constraint, Poisson, & pseudo R^2


From   David Jacobs <jacobs.184@sociology.osu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Constraint, Poisson, & pseudo R^2
Date   Tue, 19 Oct 2004 13:49:49 -0400

That's almost certainly because Long and Freeze use their add on program that calculates psuedo R squares. I can't remember the name of the add on program, but it is listed repeatedly in the Long and Freeze book.

Dave Jacobs
Ohio State

At 08:00 AM 10/19/2004 -0400, you wrote:

In the Long & Freeze book published by Stata, the authors estimate a Poisson
regression model using the constraint command to control for unequal
exposure. It produces the same coefficients as when using exposure or offset, but
the pseudo-R^2 value is substantially larger when using the constraint option
(p. 265). However, when I use the constraint option, Stata does not produce a
pseudo-R^2 value. Does anyone know whether there has been a change made to
the program by Stata?

Thanks in advance.

Bob Kaminski

*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index