[R] Multiple logistic regression

[ronggui]

Do you mean multinomial logistic model?
If it is,the  multinom function in nnet package and multinomial
function in VGAM(http://www.stat.auckland.ac.nz/~yee) package can do
it.

But I have no idea about the c-index.

2006/3/8, Stephanie Delalieux <Stephanie.Delalieux at agr.kuleuven.ac.be>:
> Dear R-users,
>
> Is there a function in R that classifies data in more than 2 groups using
> logistic regression/classification? I want to compare the c-indices of
> earlier research (lrm, binary response variables) with new c-indices
> obtained from 'multiple' (more response variables) logistic regression.
>
> Best regards,
> Stephanie Delalieux
>
> Department Biosystems
> M³-BIORES
> Group of Geomatics Engineering
> stephanie.delalieux at biw.kuleuven.be
>
>
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--
黄荣贵
Deparment of Sociology
Fudan University