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2012 Mar 03
1
interpreting the output of a glm with an ordered categorical predictor.
...t.northwestern.edu/class/2012WI_PBC_435-0_AND_BIOL_SCI_313/muller/herbivoryEdit.csv") ah1<- ah[ah$date=="110810",] ah2<-ah[ah$date=="110904",] aphidOrder <- ordered(ah2$aphidLevelMax,levels=c("none", "low", "med", "high")) ordAph <- glm(chewholebinom~aphidOrder,family=binomial,data=ah2) When I ran the summary for the glm (output pasted below), I could not tell which intercept referred to which factor level. My question is, what do .L, .Q, and .C mean and how can I relate these factors to my original factors (none, low,...