The missing data library (library(missing)) provides general capabilities
for
* creating multiple imputations
* running analyses for each set of imputations
(this supports arbitrary analyses, including Cox regression)
* combining inferences.
At bottom is an excerpt from the readme file for the library, that gives
an overview of the capabilities.
>Dear all,
>
>I have to analyse survival using Cox regression. There is some missing
>covariates in my data set and I would like to perform multiple imputation. The
>MICE package doesn't allows to combine multiple imputation for a Cox model.
>Is there an SPLUS/R code to do this?
>
>Regards,
>
>Roch
>
>
>_____________________________________________________
> Roch GIORGI, MD, PhD
> Service de Santé Publique et d'Information Médicale
> Hôpital de la Timone
> 264, rue St Pierre
> 13385 Marseille cedex 5
> Tel: +33 (0)491 384 949
> Fax: +33 (0)491 385 749
> email: roch.giorgi@ap-hm.fr
> Web: http://cybertim.timone.univ-mrs.fr/
Here is an excerpt from the readme file
(do library(help = "missing") to see the readme file):
To use the library, first load it, e.g. from the command line use:
> library(missing)
To summarize and view patterns of missing data, see functions:
miss
numberMissing
To estimate parameters using EM or data augmentation, see functions:
mdGauss
mdLoglin
mdCgm
To create multiple imputations using data augmentation, see functions:
impGauss
impLoglin
impCgm
To convert your own multiple imputations into the appropriate S-PLUS
objects for use with this library, see functions:
miVariable
miList
To perform analyses in parallel on multiple imputations, see functions:
miApply
miEval
To consolidate numerical results and standard errors from statistical
analyses from multiple imputations, see functions:
miMean miChiSquareTest
miMeanSE miLikelihoodTest
miSummary miFTest
The help files for these functions contain examples and references
to additional functions.
Extensive documentation is provided in the manual, file
Missing.pdf
Tim Hesterberg
========================================================
| Tim Hesterberg Research Scientist |
| timh@insightful.com Insightful Corp. |
| (206)802-2319 1700 Westlake Ave. N, Suite 500 |
| (206)283-8691 (fax) Seattle, WA 98109-3044, U.S.A. |
| www.insightful.com/Hesterberg |
========================================================
Download the S+Resample library from www.insightful.com/downloads/libraries
|