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From | Christopher Baum <kit.baum@bc.edu> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | re:RE: st: unconditional fixed effect logit |
Date | Sun, 30 Jan 2011 13:07:02 -0500 |
<> > Sorry, but I didn't quiet understand. > I want to know how I can run unconditional fixed effect logit, controlling for unobserved firm effects, > when my data structure is firm-country-year, not firm-year. > > I didn't quiet get how egen helps me do that. If you have firm-country-year data, and want to convert it into (firm+country)-year data, you need a variable identifying each distinct combination of firm and country so that you can xtset the data by (i) and (t). To create such a variable, which then becomes the (i), use egen combo = group(firm country) and then you may use combo in xtset. Kit Kit Baum | Boston College Economics & DIW Berlin | http://ideas.repec.org/e/pba1.html An Introduction to Stata Programming | http://www.stata-press.com/books/isp.html An Introduction to Modern Econometrics Using Stata | http://www.stata-press.com/books/imeus.html * * 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/