Hello all, I am running a logistic model with a continuous variable as first predictor and factor variable as the second. I would like to include an interaction term in the following fashion:
outcome ~ continous + factor + normalized(continuous):factor My problem is that when I do so, the reference category is not the same as in outcome ~ continous * factor Which makes comparison of the models difficult. I am sure there is a way to force the reference category to be the same all the time, but can't seem to find a straightforward answer. Thanks in advance [[alternative HTML version deleted]] ______________________________________________ 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.