On Sö, 2005-12-18, 17:32, David STADELMANN skrev: > Hi, > > I am running glm logit regressions with R and I would like to test a > linear combination of coefficients (H0: beta1=beta2 against H1: > beta1<>beta2). Is there a package for such a test or how can I perform > it otherwise (perhaps with logLik() ???)? > > Additionally I was wondering if there was no routine to calculate pseudo > R2s for logit regressions. Currently I am calculating the pseudo R2 by > comparing the maximum value of the log-Likelihood-function of the fitted > model with the maximum log-likelihood-function of a model containing > only a constant. Any better ideas?
The subject of R^2 in logistic regression was brought up some time ago. See the postings http://finzi.psych.upenn.edu/R/Rhelp02a/archive/54939.html http://finzi.psych.upenn.edu/R/Rhelp02a/archive/54940.html You could easily have found these, and couple of other ones, all by yourself just by issuing an `RSiteSearch("R^2 logistic")'. HTH Henric ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
