st: Fixed effects after xtprobit

["C.T.Shehzad" <c.t.shehzad@rug.nl>]

Dear statalisters:

I just wanted to ask why fixed effect model cannot be used with xtprobit 
while I can do fixed effect with xtlogit. Is there any econometric issue 
(which I cannot out at the moment) or its a software limitation?

Best regards,

Shehzad

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