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Re: Re: st: Multiple imputation is increasing the sample size


From   weddings@stata.com (Wesley D. Eddings, StataCorp)
To   statalist@hsphsun2.harvard.edu
Subject   Re: Re: st: Multiple imputation is increasing the sample size
Date   Mon, 02 Aug 2010 13:15:51 -0500

Hassan Chawdhury <russellchy@yahoo.com> asked about saving multiply-imputed
data:

> One more thing, is it possible to save the dataset after the imputation for
> later use?

Yes.  Hassan may use the -save- command in the usual way, because his -mi- style
is mlong.  The mlong, flong, and wide styles store the original data and the
imputations in one .dta file, which can be saved in the same way as any other
Stata dataset.

Only the flongsep -mi- style is different.  The flongsep style uses separate
.dta files for each imputation and for the observed data, and only the observed
data are kept in memory.  There are more details in -help mi styles- and in the
"style" section of the documentation entry -[MI] Glossary-.

-- Wes                  
weddings@stata.com      
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