st: ivreg vs. ivreg2 standard errors

[Giulio Zanella <giulio.zanella@tiscali.it>]

Dear listers,

It appears that ivreg and ivreg2 compute standard errors in a different way.
Those reported by ivreg are consistent with what other packages (e.g. RATS) 
compute, so I wonder how standard errors are computed by ivreg2.

Any hint would be appreciated.

Thanks in advance.

Giulio Zanella 



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