Dear all,
I have a question. I run two regressions as the
follows:
(1) reg Y X1 X2, cluster(id)
(2) reg Y X1 , cluster(id)
I would like to test the coefficients before X1 in
these two regressions are the same. But I cannot do it
using "hausman" since I used cluster. I also cannot do
it using "hausman, force". Any one knows how to do
it(the simpler, the better)?
Thanks!
Xinzheng
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