st: reg3 and overidentification

["Victoria Levin" <bagiravic@hotmail.com>]

Hi,
I am trying to do an overidentification test for a 3SLS regression.  The 
overid command does not work after reg3, so I was wondering if there is a 
way of getting around that.  If I re-run the model as ivreg2 and take the 
Sargan statistic from there, is that equivalent to testing 
overidentification for a 3SLS?  Any suggestions on this topic would be 
greatly appreciated!

Thanks in advance,

Victoria

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