Dear R-Experts,
I have fitted an ordinal logistic regression with just 1 explanatory variable
for the reproducible example here below.
Everything is working, now I try to calculate the Nagelkerke Pseudo R-squared.
I have found a package BaylorEdPsych providing many Pseudo R-squared, but the
example shown in the package is for GLM (binary logistic regression) not for
ordinal logistic regression.
How can I calculate the Nagelkerke Pseudo R-squared for ordinal logistic
regression ?
Many thanks as usual for your precious help.
Reproducible example :
install.packages("MASS")
library(MASS)
a=factor(c("tres grand", "grand", "petit","petit","tres
grand","grand","petit","petit","tres grand","grand"))
b=c("homme", "homme", "femme", "femme", "femme", "homme", "homme", "homme",
"femme", "femme")
m <- polr(a ~ b, Hess=TRUE)
summary(m)
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