why is time a predictor in a mixed model when can you exclude time from gam why time can not be used as a predictor in mixed models can time be used to predict is time allowed as a predictor in mixed models does time have to be included in gam model or regression is time allowed in mixed models can time be included in mixed model what would be considered a predictor of activity in mixed models? can time be used in a mixed model why is time not allowed in a mixed model is it allowed to include time as a predictor in mixed models? can time be used as a predictor in mixed models time as a predictor how does time work in regression is time a predictor can time be used as a predictor in mixed models? should time be used in gamm can we include a time as a predictor can time be used as a predictor in mixed models