Post #2154513

@erikjan I gravitated toward zoib because of its ability to handle clustered data. I don't believe that betareg has that capability. The fixed portion of the model is simple (the effects of interest are basically a group effect and a group x time interaction) but I don't want to disregard the longitudinal aspect of the data by e.g. selecting one random obs per cluster, because the trajectories are of interest to the investigators.