The new metobit command fits multilevel and panel-data models for which the outcome is censored. Censored means that rather than the outcome yy being observed precisely in all observations, it is known only that y≤yly≤yl (left-censoring) or y≥yuy≥yu (right-censoring) in some of the observations. For instance, the amount of a pollutant may be left-censored because … Continue reading Multilevel tobit models