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Re: st: Fixed effects = insufficient observations?


From   Ulrich Kohler <kohler@wzb.eu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Fixed effects = insufficient observations?
Date   Fri, 17 Sep 2010 13:55:09 +0200

Am Freitag, den 17.09.2010, 11:59 +0200 schrieb Tharshini Thangavelu:
> When I try to do a fixed effects regression, I get a message: insufficient
> obervations. I try with different specifications.
> As my control variables, I have, all doingbusines variables(only
> rankings), GDP per capita, education, unemployment and industry structure.
> When I exclude education variable (= gross enrollement rate (%) secondary
> from teh WorldBank, the obervations can be more than 100), it seems to be
> working. 
> 
> The education variable is a integer variable and I have other variables
> that are integer without any kind of problems. Have someone had the same
> problem with this variable? 


Are you sure that education is not a string variable holding integer
numbers? Check out the storage type in output of -describe-. If the
storage type is str## you must use -destring- first.

Uli
















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