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