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Re: st: RE: listing all observations of particular id's


From   Abhimanyu Arora <abhimanyu.arora1987@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: listing all observations of particular id's
Date   Sun, 29 Aug 2010 17:43:33 +0200

Thanks very much, Nick.
Regards
Abhimanyu


On Sun, Aug 29, 2010 at 5:30 PM, Nick Cox <n.j.cox@durham.ac.uk> wrote:
> This is an FAQ.
>
> An answer is
>
> egen anyB1 = max(B) , by(id)
> l if anyB1
>
> The rationale is discussed at tedious length in
>
> How do I create a variable recording whether any members of a group (or all members of a group) possess some characteristic?
>
> <http://www.stata.com/support/faqs/data/anyall.html>
>
> Nick
> n.j.cox@durham.ac.uk
>
> Abhimanyu Arora
>
> The basic simplified problem is as follows.
> 2 variables A (id) and B(0/1)
> I would like to list all observations of all A's for which there is at
> least one B=1.
> -list- lists only the particular observations...
>
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>

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