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AW: st: AW: dropped groups in xtlogit fixed effects


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   AW: st: AW: dropped groups in xtlogit fixed effects
Date   Thu, 1 Apr 2010 15:46:28 +0200

<> 


See Austin`s http://www.stata.com/meeting/dcconf09/dc09_nichols.pdf,
particularly page 46.



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von
rdae20@bath.ac.uk
Gesendet: Donnerstag, 1. April 2010 15:37
An: statalist@hsphsun2.harvard.edu
Betreff: Re: st: AW: dropped groups in xtlogit fixed effects

So xtlogit, fe only measures within country variations right?

If I want to measure both cross country and within country what should  
i use? random effects?

Richard

Quoting Martin Weiss <martin.weiss1@gmx.de>:

>
> <>
>
>
> http://www.stata.com/statalist/archive/2009-10/msg01191.html
>
>
>
> HTH
> Martin
>
>
> -----Ursprüngliche Nachricht-----
> Von: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von
> rdae20@bath.ac.uk
> Gesendet: Donnerstag, 1. April 2010 15:13
> An: statalist@hsphsun2.harvard.edu
> Betreff: st: dropped groups in xtlogit fixed effects
>
> Dear Statalisters,
>
> I want to use a logit regression on panel data with country fixed
> effects, therefore I am using xtlogit with fe at the end.
>
> However I am getting two notes that i do not fully understand.
>
> 1st, Multiple positive outcomes within groups encountered
> 2nd, x groups (x obs) dropped becasue of all positive or all negative
> outcomes
>
> can anybody explain what these mean and if they are a problem? It
> almost halves my sample which may be a bit of an issue.
>
> I must apologize for my stata ignorance, I am new a stata newby
>
> Many thanks in advance for any help you may be able to offer,
>
> Richard
>
>
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>




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