Very interesting post Ashish, Thank you. I am using Stata12. I want to test Sargan test in twostep in FD-GMM and SYS-GMM, but the probability always equals to 1. Is it always like that? If we use twostep for testing Sargan Test, the Prob> chi2 =1 ?
Thanks for your attention :)
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Re: Using gmm to solve two-step estimation problems
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