[R] polr question

Graeme D Hutcheson mewssgdh at fs1.ed.man.ac.uk
Wed Nov 8 15:44:40 CET 2000


I am trying to reproduce in R an analysis reported in Agresti
(1996; page 214) and Agresti and Finley (1997; page 602) which
uses the proportional odds logistic regression model to compare
political ideology.

I am using the "polr" function from the MASS library which provides
a number of statistics, but does not appear to provide -2 LOG L
for the intercept only model. This statistic is useful as it
would enable me to reproduce exactly the analysis which is
currently reported using SAS and enble me teach a bit more using R.


G. Hutcheson
Faculaty of Education
Manchester University
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