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

st: RE: Pseudo R-squared in ZIP negbin model


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Pseudo R-squared in ZIP negbin model
Date   Wed, 19 Oct 2005 17:40:48 +0100

There's some general arm-waving in this area at 

FAQ     . . . . . . . . . . . . . . . . . . . . . . . Do-it-yourself R-squared
        9/03    How can I get an R-squared value when a Stata command
                does not supply one?
                http://www.stata.com/support/faqs/stat/rsquared.html

and 

. search r-squared 

throws up related material. By and large, the omission of R^2, real, 
pseudo, imaginary or otherwise, is a kind of signal that the 
programmer felt queasy about implementing one. 

Nick 
n.j.cox@durham.ac.uk 

Joshua P. Mersky
 
> I am conducting analyses using zero-inflated negative 
> binomial regression. 
> Unlike regular negbin output, ZIP models do not produce a 
> Pseudo R-Squared 
> statistic.  I would like to know if there is a Stata command 
> whereby I can 
> produce a Pseudo R-squared statistic, or its equivalent, to 
> determine model fit in a ZIP model.

*
*   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