Seems as if neither is! The key is surely what other output you have,
including any indications of major or minor problems.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Carlo Lazzaro
testing for overdispersion after a Poisson regression,
I have obtained two opposite results:
estat gof
Goodness-of-fit chi2 = 3599.159
Prob > chi2(4384) = 1.0000
. estat gof, pearson
Goodness-of-fit chi2 = 5438.241
Prob > chi2(4384) = 0.0000
Which one is trustworthy??
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