On Mon, 4 Jun 2007, [EMAIL PROTECTED] wrote: > Hi - I am using polr. I can get a result from polr fit by calling > > result.plr <- polr(formula, data=mydata, method="probit"); > > However, from the 'result.plr', how can I access standard error of the > estimated coefficients as well as the t statistics for each one of them?
You do this from summary(result.plr), possibly via coef(summary(result.plr)) > What I would like to do ultimately is to see which coefficients are not > significant and try to refit the model again by excluding those > variables out. I would appreciate if anyone could give some hint on > this. Thank you. There is a multiple comparisons problem in doing that, especially so if the coefficients refer to multi-level factors. Using stepAIC is better-supported. > - adschai > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > 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. > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list 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.