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
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