Sorry, I didn't read your request carefully enough: I should have suggested you to type:
ssc install ivreg2, replace
Nicola
At 13.14 28/10/2007 +0100, dora sepour wrote:
>Thank you so much for your help for the cross-sectional correlation test (xtcsd).
>
>As far as the overidentification test is concerned, i installed first xtoverid, then xtivreg2. When i try to run the test xtoverid after an Hausman-Taylor estimation, an error message appears"Error-must have ivreg2 version 2.1.15 or greater installed" r(601)
>
>Thank you,
>Dora
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