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Re: st: -impute- variable creates only type 'float'


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: -impute- variable creates only type 'float'
Date   Mon, 14 Jul 2008 23:41:44 +0100 (BST)

--- Hewan Belay <hewan_belay@yahoo.com> wrote:
> It appears that the command to estimate missing values, -impute-,
> always generates the new predicted value as a 'float' type. -impute-
> doesn't seem to have an option for setting the type. Even when I set
> the type to double permanently, -impute- still creates 'float'
> variables. It's a problem because I want to do some comparisons
> between the original variable and the imputed variable, and I found
> that differences are not only due to the missing values, but also
> because, as type float, the newly estimated variable has different
> values for large numbers due to 'float's imprecision. 

The answer is that you shouldn't use -impute- at all. This is discussed
here: http://www.stata.com/statalist/archive/2007-12/msg00507.html 
Use -ice- instead.

-- Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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