Dear All,
I am trying to use the packadge polr () to analyse ordinal categorical data
responses. Instead of using polr() directly, I have altered the script slightly
(imposed a constraint to make all the parameters greater than or equal to zero)
(see below),
fit <- list(coefficients = exp(beta), zeta = zeta, deviance =
deviance,........................)
However my main problem is that when I use this "new script" I am unable to get
the t-values and p-values (though able to get the parameter values and the
deviance). I have downloaded and scrutinised the polr() script in an attempt to
understand the section where these t- and p- values are estimated but without
much success.
Where is polr () are these p- and t-values estimated?
Thanks
Simo
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