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Re: st: missing values & ice & categorical variables


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: missing values & ice & categorical variables
Date   Tue, 3 Jun 2008 21:04:53 +0100 (BST)

--- Andrea Bennett <mac.stata@gmail.com> wrote:
> There is no way of generating the dummies out of the categorical  
> variables and then dealing with the missing values, right? At least  
> not, if I would like to work with the "ice" command. 

That is not true, -ice- was created to deal with many types of
variables including categorical. Including different types of variables
was actually the reason for devoloping the algorithm that -ice- used.
You can read more about how to use -ice- in the following articles:

Royston, P. 2004. Multiple imputation of missing values. Stata Journal
4(3): 227241.

Royston, P. 2005. Multiple imputation of missing values: update. Stata
Journal 5(2): 188201.

Royston, P. 2005. Multiple imputation of missing values: Update of ice.
Stata Journal 5(4): 527-536. 

Royston, P. 2007. Multiple imputation of missing values: further update
of ice, with an emphasis on interval censoring. Stata Journal 7(4):
445-464.

You can find these articles here:
http://www.stata-journal.com/archives.html

Hope this helps,
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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