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| From | Natalie Trapp <natalie.trapp@zmaw.de> |
| To | statalist <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: Binary Variables |
| Date | Wed, 02 Jun 2010 16:03:28 +0200 |
Hi Neil, I use Stata 11 and do a normal OLS estimation (with the "reg" command): y = dependent variable (agricultural inputs) x = independent variables (climate variables, crops, etc.) and dummy variables that represent the 150 regions within the EU The coefficients of the dependent variable within each region are very divers and significant for about 120 regions. My Problem is for instance, when "Schleswig Holstein" is my reference group, Stata adittionally omits Valle d'Aoste, Vlaanderen and Ile de France. Still, I don't quite understand why Stata does it, because the regions (Germany, France, Netherlands) do not seem to be similar to me. Kind regards, Natalie On 6/2/2010 2:11 PM, Neil Shephard wrote:
On Wed, Jun 2, 2010 at 11:42 AM, Natalie Trapp<natalie.trapp@zmaw.de> wrote:Thank you very much. It is not possible that my dependent variable is constant within a region and I want to have the effects of different regions....As per the Statalist FAQ (linked in the footer of all messages from the list), if you could show _exactly_ what you are typing/entering into Stata and the output as well people might be able to offer more advice. Have you checked what levels the dependent variable takes within each region? Neil
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