st: ivreg2: interacting the endogenous regressor

[Jana von Stein <janavs@umich.edu>]

Hello,

I need to interact my endogenous variable (for which I'm  
instrumenting) with one of the exogenous variables in my step2  
equation. Is there a straightforward way to do this using ivreg2? I'm  
reluctant to do it by hand because I'm not certain whether the  
standard errors would be right; I am also a bit of a novice on iv  
regression and so would like to be able to take advantage of ivreg2's  
already-programmed post-estimation tests, etc.

I'd be grateful for any ideas,
thanks.
Jana
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