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st: Re: noconstant (fixed effects models) (fwd)


From   paulor@pos.ucb.br
To   statalist@hsphsun2.harvard.edu
Subject   st: Re: noconstant (fixed effects models) (fwd)
Date   Sex, 07 Jun 2002 21:32:40 GMT

Pablo Gonzalez

Thanks for your help

Sincerely,

 Paulo Loureiro


---------- Mensagem encaminhada ----------
De:
You have difficulty using that option because it does not exists! xtreg
does
not have a noconstant option.
Why not running ols with the group and period dummies?
Anyway is a matter of interpretation, both regressions will give you the
same results.

Check

FAQ	. . . . . . . .  Interpreting the intercept in the fixed-effects
model
   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W. 
Gould
	10/97	How can there be an intercept in the fixed-effects model
		estimated by xtreg, fe?
		http://www.stata.com/support/faqs/stat/xtreg2.html



----- Original Message -----
From: <paulor@pos.ucb.br>
To: <statalist@hsphsun2.harvard.edu>
Sent: Friday, June 07, 2002 2:28 PM
Subject: st: noconstant (fixed effects models) (fwd)




Dear statalisters,

 I have a question about fixed effects models using the xtreg
command.  One, I am having difficulty getting the regression done with
the noconstant option.

I want to obtain the values of the parameters group 1, group 2 and
group 3(individuals effects) using the command xtreg without the
constant term of the equation

I have had no success when using the equations bellow without a
constant and no had success

When I make this regression, the program STATA 7.0 removes from the
results one of the parameter of the groups. I would like that it left
the results the parameter period 1 or period 9, and no one of the
parameters of the groups. I want to have control on that result. How to
do it?

xtreg lw group1 group2 group3 period8 exp exp2 ocupation childrens
regions if men==1, fe i(period) noconstant

or use

xtreg lw period1 period2 period3 period4 period5 period6 period7
period8 periood9 exp exp2 ocupation childrens regions if men==1, fe
i(group) noconstant

groups are individuals effects (represents the intercepts)
group1=22 at 32 ages of years
group2=33 at 43 ages of years
group3=44 at 54 ages of years

period1 at period9 are specific effects of the time.


Prof. Dr. Paulo R. A. Loureiro
Economist
Universidade Católica de Brasília -UCB
Brasília-Distrito Federal-Brazil


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