-vif- is out-of-date as of Stata 10 (and probably earlier), but is still there.
-estat vif- is now recommended.
But -vif-, as said, gives an inappropriate error message after -logit-
and -estat vif- won't play at all.
My understanding, like Richard's, is that anything that examines the collective properties
of the predictors alone should be accessible after a modelling command,
regardless of the response variable or link function used in that model.
That may be a counsel of perfection, but it is a clear ideal.
Nick
[email protected]
Richard Williams
At 05:21 AM 3/19/2008, Herve STOLOWY wrote:
>Dear Richard:
>
>I thank you for your detailed reply.
>
>For your information, I discovered the -vif, uncentered- because I
>had typed -vif- after -logit- and got the following error message:
>
>not appropriate after regress, nocons;
>use option uncentered to get uncentered VIFs
>
>Best regards
>
>Herve
I got the same thing. It seems like a nonsensical error message to
get after running logit, which again makes me wonder if there is some
sort of bug in -vif-.
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