Re: st: AW: LSDV vs. FE

[Asgar Khademvatani <akhademv@ucalgary.ca>]

Hello Martin,

Thanks for the comments. My understanding from Baum (2006) is that in 
running LSDV, which is equivalent to one-way FE, we should run with 
constant term as,( for instance if we have 4 Units):
regress y d1 d2 d3 x         where d2 d3 d3 are dummies.

Am I right?

Thank you.
Asgar

Martin Weiss wrote:
> <> 
>
> You want to consult Baum (2006), chapter 9.1.1, where this is explained
> quite clearly. See 
> http://www.stata-press.com/books/imeus.html
>
>
> HTH
> Martin
>
> -----Ursprüngliche Nachricht-----
> Von: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Asgar
> Khademvatani
> Gesendet: Freitag, 27. Februar 2009 19:48
> An: statalist@hsphsun2.harvard.edu
> Betreff: st: LSDV vs. FE
>
> Hello All,
>
> In general, I understand that LSDV estimation method  is an alternative
> way of modeling fixed-effectsin in panel data approach , or it is
> equivalent to FE method. But, in STATA, we can specify a LSDV model in two
> ways:
>
> (1)with common constant as:
> LS y d1 d2 d3 x1 x2 x3   or
>
> (2)we can run  it without constant or with non-constant option as:
> (for example)LS d1 d2 d3 x1 x2 x3, nonconstant
>
> I got a couple of concerns and questions as follows:
>
> First,  which syntax of LSDV given above is appropriate or reliable for
> modeling a fixed-effects model? I mean it should be run with constant or
> without constant as shown above?
>
> Second, when we run FE model in Stata as:
>
> xtreg y x1 x2 x3, fe
>
> My question is that is this equivalent to LSDV with constant or without
> constant?
>
> Thank you in advance.
>
> Regards,
> Asgar Khademvatani
> Ph.D. Candidate-Department of Economics
> The Faculty of Social Sciences
> University of Calgary,
> 2500 University Dr., NW., Calgary,
> Alberta, Canada, T2N 1N4
> Email: akhademv@ucalgary.ca
> Tel: +1(403)210-2574
>
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--
Sincerely,
Asgar Khademvatani, PhD Candidate
Department of Economics
University of Calgary


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