Hello everybody I have done a generalized linear model (glm-function) with a binary response variable (presence/absence) and two explanatory variables (including the interaction term (model<-glm(x~factor1*factor2, family=quasibinomial)). The interaction is what we are mainly interested in and it is non-significant (F=0, p=1.0). A reviewer on the manuscript now asks for a a priori power analysis on the non- significant interaction to see what sort of effect size we could reasonably have detected with our experimental design. As far as I have seen there is no power analysis function implemented for glm in R, or am I mistaken? Or does any one have any other suggestions how to deal with that comment?
I would really appreciate your help! Thanks in advance Simone Simone Haerri Institute of Environmental Sciences University of Zurich Winterthurerstrasse 190 Ch - 8057 Zurich ______________________________________________ R-help@stat.math.ethz.ch 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.
