Abstract
This research investigates the possibility of the existence of an environmental discontinuity in federal public teaching hospitals due to their incorporation by the state-owned Brazilian Company of Hospital Services - EBSERH. The difference-in-differences method was used with a quantitative approach. 51 hospitals were analyzed, being excluded 9 from the final sample. The results showed that there were signs of discontinuity in two of the three dependent variables, precisely the average revenue per patient (at 1%) and the mortality rate (at 10%).