Brian,
Have a look at package aod on CRAN, and more specifically the
functions "icc", "donner" and "raoscott".
Best,
Renaud
2006/1/18, Brian Perron <beperron at wustl.edu>:> Hello R users:
>
>
>
> I am fairly new to R and am trying to figure out how to compute an
intraclass correlation (ICC) and/or design effect for binary data? More
specifically, I am trying to determine the amount of clustering in a data set -
that is, whether certain treatment programs tend to work with more or less
severe clients. The outcome variable is dichotomous (low severity / high
severity) and the grouping variable is the treatment program. Any suggestions
for some R code or the appropriate R package would be greatly appreciated.
>
>
>
> Thanks,
>
> Brian
>
> [[alternative HTML version deleted]]
>
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--
Renaud LANCELOT
D??partement Elevage et M??decine V??t??rinaire (EMVT) du CIRAD
Directeur adjoint charg?? des affaires scientifiques
CIRAD, Animal Production and Veterinary Medicine Department
Deputy director for scientific affairs
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