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| From | Rebecca Pope <rebecca.a.pope@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: RE: Standard errors of certain quantities after estimating a system of equations |
| Date | Thu, 7 Mar 2013 19:27:17 -0600 |
On Thu, Mar 7, 2013 at 3:48 AM, Murat Genc <murat.genc@otago.ac.nz> wrote: > > The solution suggested by Maarteen there used the margins command in combination with nlcom. Based on that I tried the following > > margins, dydx(*) predict(equation(w1)) post nlcom e1_2: -1+(1/w1bar)*((pdfp1bar*coeflnp2eq1*(w1hatbar-[w1]pdfp1*pdfp1bar)/cdfp1bar)+cdfp1bar*([w1]shlnp21-[w1]lfp1*w2bar)-[w1]pdfp1*pdfp1bar*coeflnp2eq1*pr1bar) > > to do the calculation for one case. But when I try it I get an error message that says "option nlcom not allowed." > > I haven't reviewed Maarten's solution or the appropriateness of your adaptation, so my comment is confined to your error message. You've placed -nlcom- on the same line as -margins-. Using your same code: margins, dydx(*) predict(equation(w1)) post // note new line here nlcom e1_2: -1+(1/w1bar)*((pdfp1bar*coeflnp2eq1*(w1hatbar-[w1]pdfp1*pdfp1bar)/cdfp1bar)+cdfp1bar*([w1]shlnp21-[w1]lfp1*w2bar)-[w1]pdfp1*pdfp1bar*coeflnp2eq1*pr1bar) Regards, Rebecca * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/