Dear all, I’ll need your help with obtaining robust clustered errors. I use polr command in MASS package m<–porl(y~x1+x2,data=mydata, method=probit). In the rms package, this is as simple as: clusterSE<–robcov(m, mydata$id). Is it possible to do something similar for polr object as well? Thank you very much
Best, Faradj [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.