adschai at optonline.net
2007-Jun-11 01:33 UTC
[R] How do I obtain standard error of each estimated coefficients in polr
Hi, I obtained all the coefficients that I need from polr. However, I'm wondering how I can obtain the standard error of each estimated coefficient? I saved the Hessian and do something like summary(polrObj), I don't see any standard error like when doing regression using lm. Any help would be really appreciated. Thank you! - adschai
Spencer Graves
2007-Jun-13 03:29 UTC
[R] How do I obtain standard error of each estimated coefficients in polr
I'm confused: Have you considered the 'examples' in the 'polr' help file? The first example ends "summary(house.plr)". The print of this summary includes standard errors. If you want those numbers for subsequent computations, you can try str(summary(house.plr)) or names(summary(house.plr)). If you want to be more sophisticated, class(summary(house.plr)) says it is "summary.polr". Then methods(class="summary.polr") says there exists a function 'print.summary.polr', which is however, 'invisible'. If you want to see it, "getAnywhere('print.summary.polr')" will produce the code. If this does NOT answer your question, please provide commented, minimal, self-contained, reproducible code, as requested in the posting guide "www.R-project.org/posting-guide.html". Hope this helps. Spencer Graves adschai at optonline.net wrote:> Hi, > > I obtained all the coefficients that I need from polr. However, I'm wondering how I can obtain the standard error of each estimated coefficient? I saved the Hessian and do something like summary(polrObj), I don't see any standard error like when doing regression using lm. Any help would be really appreciated. Thank you! > > - adschai > > ______________________________________________ > R-help at 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. >