Re: st: RE: impute: too many variables specified

[Richard Williams <Richard.A.Williams.5@nd.edu>]

At 06:07 PM 11/18/2004 +0000, Nick Cox wrote:
> This was asked a while back. I can't remember
> the answer but it should be in the archives.
>
> A quite different comment is to ask how much
> better your imputation is based on 30+ predictors
> rather than 30.
I was thinking this sounded familiar.  Jeff Pitblado discussed it here and 
basically said don't try to increase the limit yourself.  However, he also 
describes a possible -nomissings- option that has indeed since been added 
to Stata:

http://www.stata.com/statalist/archive/2003-11/msg00356.html

As to why you might want more than 30 predictors -- one example might be 
where you have a categorical variable with many categories (resulting in 
30+ dummy variables).

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