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Re: st: svy subpop option and e(sample)


From   Austin Nichols <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: svy subpop option and e(sample)
Date   Wed, 25 May 2011 14:39:43 -0400

Richard--
Recall this conversation from 2007:
http://www.stata.com/statalist/archive/2007-11/msg00810.html

On Wed, May 25, 2011 at 11:10 AM, Richard Williams
<richardwilliams.ndu@gmail.com> wrote:

> As a sidelight, one of the things that has always bothered me about subpop
> is that you are apparently never supposed to create an extract from your
> data, e.g. you could have 100 million cases and only be interested in a
> subpopulation of 10,000, but you are nonetheless supposed to keep all 100
> million cases in your data set so the standard errors are right. I always
> wonder how horrible it would be if you just made the extract or used -if-
> instead of subpop. If, say, the standard errors might be off by .01%, I
> suspect I could live with that.
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