Tuesday, March 07, 2006

st: help needed for fixed effects Negative Binominal regression model

Hello everyone:

I was just added to this list today and would like get some help about fixed effects negative binominal regression model.

I will be using a longitudinal data such as Adolescent Health. If I want to run a fixed effects negative binominal regression model, how should the data be structured? Add Health used the wide format, with each individual having one line and three variables measuring the same concept at three time points (Add Health has three waves so far). I guess I should change it to the long format, that is, each time point should have one line and each individual should have three lines. Can I re-structure the data in Stata?

Second, I have no experience in STATA. If anyone has experience using fixed effects Poisson or negative binominal model, can you share some of the syntax with me? I checked the manual and it looks it's not too hard, but any help will be appreciated.

Xiaojin Chen

*************************** Dr. Xiaojin Chen Assistant professor Sociology Department Tulane University New Orleans, LA 70118-5698 *************************** * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/


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