search for: roefoxratio

...ello I have a problem when fitting a mixed generalised linear model with the lmer-function in the Matrix package, version 0.98-7. I have a respons variable (sfox) that is 1 or 0, whether a roe deer fawn is killed or not by red fox. This is expected to be related to e.g. the density of red fox (roefoxratio) or other variables. In addition, we account for family effects by adding the mother (fam) of the fawns as random factor. I want to use AIC to select the best model (if no other model selection criterias are suggested). the syntax looks like this: > mod <- lmer(sfox ~ roefoxratio + (1|fa...