st: re: comparing coefficients in different regressions

[Kit Baum <baum@bc.edu>]

Antonio said

global malesuic (divper_lag  income_lag gini_xpg   alcohtot  gunhomper
unempl  p1019 p65 pctcatholic pcprotestant pctmormon pctbabtispt
i1-i51 )

global femalesuic (divper_lag  income_lag gini_xpg  alcohtot gunhomper
unempl  p1019 p65 pctcatholic pcprotestant pctmormon pctbabtispt
i1-i51 )


sureg $malesuic $femalesuic

I got the message singular matrix, i am trying to estimate a fixed  
effects model

test [malesuic] gunhomper = [femalesuic] gunhomper


First of all there is no need for the globals. Equations will be  
given names automatically. What you have done is exclude the  
dependent variable from each regression. Those equation names are  
used in the test command WITHOUT intervening spaces, e.g. [malesuic] 
gunhomper.



Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


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