[R] Ordinal logistic regression using spatial data

[Frank E Harrell Jr]

On Wed, 3 Mar 2004 18:14:25 -0700
Christof Bigler <christof.bigler at colorado.edu> wrote:

> I have a spatial data set with ordinal response variable containing 
> four levels. I would like to know if and how spatial autocorrelation 
> can be taken into account when ordinal logistic regression is used 
> (e.g. the function lrm from the Design package).
> 
> Thanks for your help!
> Christof

lrm (through the robcov and bootcov functions) can take into account
general intra-cluster correlations.  This works best when clusters do not
contain very many observations.  Different clusters are assumed to be
independent.

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Frank E Harrell Jr   Professor and Chair           School of Medicine
                     Department of Biostatistics   Vanderbilt University