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2010 Apr 28
1
model selection, lme
hello,
i'd like to evaluate the 2 factors (f1 with 4, f2 with 2 levels) and its
interactions in my model for writing up a summary table with
likelihood-ratio tests for publication purpose.
now i'm unsure about which terms of my model may be dropped from the full
model and which not.
mfull<-lme(resp~f1*f2,random=...)
m1<-lme(resp~f1+f2,..)
m2<-lme(resp~f1,..)
m3<-lme(resp~f2,..)
i compared each model with dropped terms with the full model, but is this
allowed for m2 and m3?
or would i rather have to sequentially compare mfull/m1,m1/m2,m1/m3.
i'd very much appreciate...