[R] Type of multi-valued variable

[Frank E Harrell Jr]

On Mon, 10 Feb 2003 21:51:50 +0100
Fan <xiao.gang.fan1 at libertysurf.fr> wrote:

> Hi,
> 
> I've read in the past a thead in the R discussion list
> about the multi-valued type variable (what was called checklist).
> At the moment Gregory had intention to add some general code
> in his gregmisc package.
> 
> I'm wondering if there's some general code / packages available ?
> 
> A general class for taking account this type of variable 
> would be very useful in the domain of survey processings,
> as multi-responses questions are often used. 
> The simple operations applied to these variables are holecount, 
> cross tabulations with others variables, transformation to single 
> coded variables like number of responses, etc.
> 
> Thanks in advance for any help
> --
> Fan
> 

Fan, Take a look at p. 38-44 of http://hesweb1.med.virginia.edu/biostat/s/doc/summary.pdf where examples of the mChoice (multiple choice) function in Hmisc are given.

-- 
Frank E Harrell Jr              Prof. of Biostatistics & Statistics
Div. of Biostatistics & Epidem. Dept. of Health Evaluation Sciences
U. Virginia School of Medicine  http://hesweb1.med.virginia.edu/biostat