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From | "Marc Michelsen" <marcmichelsen@t-online.de> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | AW: st: Testing for differences |
Date | Thu, 28 Oct 2010 17:18:15 +0200 |
Maarten, thanks for this. Would that be a multinomial logistic regression as the rating outlook has the three values "positive, negative, stable"? Regards Marc -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Maarten buis Gesendet: Donnerstag, 28. Oktober 2010 15:25 An: statalist@hsphsun2.harvard.edu Betreff: Re: st: Testing for differences --- On Thu, 28/10/10, Marc Michelsen wrote: > I looking for the appropriate statistic to test for > differences in a rated company sample (panel data). The > dataset comprises beside company financials, the rating > category (e.g. AA, A, BBB) and the rating outlook > (positive, negative, stable) per year. > > I want to test for differences in company characteristics > between firms with a positive, negative, stable outlook. > However, the comparison has to be done within a rating > category. > > How can I replicate this in Stata? Sounds to me like a regression of a charateristic on rating and outlook. Rating would than be a control variable. You might consider adding interaction terms between rating and outlook. > Or more general, what is this type of problem called in > econometric terms? Just regression. Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * 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/