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From | "Martin Weiss" <martin.weiss1@gmx.de> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | st: AW: Marginal-effect calculations after 'xtlogit, fe' ? |
Date | Tue, 29 Jun 2010 16:34:40 +0200 |
<> Also note the FAQ at http://www.stata.com/support/faqs/stat/mfx_unsuit.html HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von severine_blaise@hotmail.com Gesendet: Dienstag, 29. Juni 2010 14:10 An: statalist@hsphsun2.harvard.edu Betreff: st: Marginal-effect calculations after 'xtlogit, fe' ? Hello all, I understand that marginal effect calculations are only possible with the default random effect of xtlogit, as follows : xtlogit, conflit txaide lpibt croiss service g txide lpop alimentpop eau, re mfx compute, predict (pu0) Does anyone know how to calculte such effects after a 'xtlgit, fe' ? Thank you very much for your help. Séverine -------------------------------------------------- From: <severine_blaise@hotmail.com> Sent: Friday, June 25, 2010 5:53 PM To: <statalist@hsphsun2.harvard.edu> Subject: Marginal-effect calculations and prediction tests with xtlogit command > Hello, > > I'm trying to calculate marginal effects after the estimation of a FE > logit model, and to obtain predictions... without success. > I'm working on the economic determinants of conflict onset and duration in > 10 African countries, therefore estimating with panel data, and performing > tests on Stata 10.1. Below is my do file : > > **Panel logit test on conflict onset/duration in African countries > log using Conflit, replace > set memory 18m > use ConflitAfrique > tsset pays temps, yearly > gen conflit1 = L.conflit > gen txaide = aide/pib > gen txaide3 = log(0.2*(L.txaide+L2.txaide+L3.txaide)) > gen lpibt = log(pib/pop) > gen txpib = (pib-L.pib)/L.pib > gen croiss = L.txpib > gen txdette = dette/pib > gen txide = ide/pib > gen lpop = log(L.pop) > gen txaliment = (aliment-L.aliment)/L.aliment > gen txpop = (pop-L.pop)/L.pop > gen alimentpop = L.txaliment/L.txpop > gen leau = log(eau) > gen pibus3 = log(0.2*(L.pibus+L2.pibus+L3.pibus)) > gen pibfr3 = log(0.2*(L.pibfr+L2.pibfr+L3.pibfr)) > > ***Model of conflict onset > *Calculation of marginal effects > xtlogit conflit txaide lpibt croiss service g txide lpop alimentpop eau if > conflit1==0, fe > mfx compute > > /// RESULTS : default predict () is unsuitable for marginal-effect > calculation r(119); > > *Prediction Test > xtlogit conflit conflit1 txaide lpibt croiss service txide lpop alimentpop > ethnie eau, fe > predict confestime > > /// RESULTS : (option pc1 assumed; conditional probability for single > outcome within group) > (20 missing values generated) > It seems to be working but I don't know how to display the results, as it > is the case with the command 'lstat' after a logit estimation. > > > > Thank you very much in advance for your help. > > Best Regards > Severine > > **** > > Dr Severine BLAISE > Senior Lecturer in economics > University of New-Caledonia > Department of Law-Economics-Business > B.P. R4 > 98 851 Noumea CEDEX > New Caledonia > > Web : http://www.severine-blaise.com/ > Téléphone : (687) 26 69 31 Fax : (687) 26 69 30 > « Think green : print this message only if necessary » * * 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/ * * 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/