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Hello,
I suspect endogeneity between "ad"
and "roa" in the regression below. First, I would like to test for
endogeneity. Second, I want to perform a 2SLS to get valid estimates.
Apparently, the following commands should work, but Stata generates an error.
Can you tell me what is wrong with my syntax (logic)?
ivreg ad pse bonus
leverage roa pricebook beta lnsize blockown (roa = pse
bonus leverage
pricebook beta lnsize ); hausman, save;
regress ad pse bonus leverage roa
pricebook beta lnsize blockown; hausman,
constant
sigmamore;
Thanks,
Claude
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