Yes, I was indeed asking about stepwise procedures! On Thu, Mar 4, 2010 at 11:29 AM, David Winsemius <dwinsem...@comcast.net> wrote: > > On Mar 4, 2010, at 10:47 AM, Dimitri Liakhovitski wrote: > >> I am not sure if this question has been asked before - but is there a >> procedure in R (in lm or glm?) that is equivalent to ENTER and REMOVE >> regression commands in SPSS? >> Thanks a lot! > > I haven't used SPSS for 25 years (excluding a brief session where I talked > an inexperienced SPSS user through creating a multi-way table of mortality > ratios a couple of years ago) but my memory is that those operations drop or > add terms to a model formula and produced voluminous paper output as a > result. Looking at the "lm" function help page, I guessed that I might find > more information at the anova.lm help page and sure enough, there at the > bottom of the page was "drop1". My vague memory that there was a matching > "add1" was rewarded with confirmation when I followed the "drop1" link. > > I generally just make another call to lm(). > > >> >> -- >> Dimitri Liakhovitski >> Ninah.com >> dimitri.liakhovit...@ninah.com >> > -- > > David Winsemius, MD > Heritage Laboratories > West Hartford, CT > >
-- Dimitri Liakhovitski Ninah.com dimitri.liakhovit...@ninah.com ______________________________________________ R-help@r-project.org 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.
