Re: [R] Multiple imputation for nominal data

2010-11-03 Thread Frank Harrell

The aregImpute function in the Hmisc package can do this through predictive
mean matching and canonical variates (Fisher's optimum scoring algorithm).

Frank


-
Frank Harrell
Department of Biostatistics, Vanderbilt University
-- 
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Re: [R] Multiple imputation for nominal data

2010-11-02 Thread Andrew Miles
There are a couple of packages that do MI, including MI for nominal  
data.  The most recent of these is mi, but I believe mice might do  
it as well.  Both are available on the CRAN, and both have useful  
articles that teach you how to use them.  The citations for these  
articles can be found at the bottom of the help page that appears by  
typing


?mi
OR for mice
?mice

mi is the newer package and has some useful control features, but as  
it is newer it still is under development.


Andrew Miles


On Nov 2, 2010, at 3:38 PM, John Sorkin wrote:

I am looking for an R function that will run multiple imputation  
(perhaps fully conditional imputation, MICE, or sequential  
generalized regression) for non-MVN data, specifically nominal data.  
My dependent variable is dichotomous, all my predictors are nominal.  
I have a total of 4,500 subjects, 1/2 of whom are missing the main  
independent variables. I would appreciate any suggestions that the  
users of the listserver might have.

John


John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)

Confidentiality Statement:
This email message, including any attachments, is for th...{{dropped: 
6}}


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Re: [R] Multiple imputation for nominal data

2010-11-02 Thread John Sorkin
Thank you!
John




John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) Andrew 
Miles rstuff.mi...@gmail.com 11/2/2010 3:59 PM 
There are a couple of packages that do MI, including MI for nominal  
data.  The most recent of these is mi, but I believe mice might do  
it as well.  Both are available on the CRAN, and both have useful  
articles that teach you how to use them.  The citations for these  
articles can be found at the bottom of the help page that appears by  
typing

?mi
OR for mice
?mice

mi is the newer package and has some useful control features, but as  
it is newer it still is under development.

Andrew Miles


On Nov 2, 2010, at 3:38 PM, John Sorkin wrote:

 I am looking for an R function that will run multiple imputation  
 (perhaps fully conditional imputation, MICE, or sequential  
 generalized regression) for non-MVN data, specifically nominal data.  
 My dependent variable is dichotomous, all my predictors are nominal.  
 I have a total of 4,500 subjects, 1/2 of whom are missing the main  
 independent variables. I would appreciate any suggestions that the  
 users of the listserver might have.
 John


 John David Sorkin M.D., Ph.D.
 Chief, Biostatistics and Informatics
 University of Maryland School of Medicine Division of Gerontology
 Baltimore VA Medical Center
 10 North Greene Street
 GRECC (BT/18/GR)
 Baltimore, MD 21201-1524
 (Phone) 410-605-7119
 (Fax) 410-605-7913 (Please call phone number above prior to faxing)

 Confidentiality Statement:
 This email message, including any attachments, is for ...{{dropped:18}}

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