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| From | Sukesh Patro <kksp.stata@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: RE: Different coefficient magnitudes in ols and 2sls estimation |
| Date | Thu, 22 Apr 2010 13:05:13 -0500 |
Nick, The coefficients are 0.20 in OLS and 2.00 in 2SLS. To answer your question, "significantly smaller" in this context means the referee thinks that this is different enough to be troubling. Also, to answer a related question from Kit Baum we did a Hausman test on Y2 and rejected the exogeneity of Y2. So it seems that 2SLS would be appropriate. We have not done a Sargan or Hansen test. Will look into that and post the outcome. Thanks to both of you for your interest. SSKP On Thu, Apr 22, 2010 at 11:22 AM, Nick Cox <n.j.cox@durham.ac.uk> wrote: > What precisely does "significantly smaller" mean in this discussion? > Does "significant" mean here anything other than "surprising to me"? I > don't have an answer to your question, but as you say clarity is needed > here. > Nick > n.j.cox@durham.ac.uk * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/