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Re: st: Panel Data dfbeta

From   Stas Kolenikov <[email protected]>
To   [email protected]
Subject   Re: st: Panel Data dfbeta
Date   Mon, 14 Sep 2009 11:31:45 -0500

The regular DFBETA is an exercise in matrix algebra -- you don't
really refit the model n times to get them. You might be able to push
around some Kronecker products to derive similar quantities, although
of course you would have separate DFBETAs from fe, re or between
estimators. If your Stata programming skills are better than your
matrix algebra, you can run your -xtreg- [# panels] times, -post- the
results and construct your panel DFBETAs that way. If you do the
latter, that might be a nice paper for SJ :))

On Mon, Sep 14, 2009 at 10:32 AM, Steven Archambault
<[email protected]> wrote:
> Hi all,
> I am trying to do a sensitivity analysis of panel data, and want to
> check what outliers are doing to my analysis. Is there an equivalent
> to dfbeta that can be used for this in a panel data setting?
> Thanks!
> -Steve
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Stas Kolenikov, also found at
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