“…All study results are presented in Table 1. Ten publications dealing with day-case surgery (hospital stay \12 h, mainly coming from Europe) were identified (8 prospective [9][10][11][12][13][14][15][16], 2 retrospective [17,18]), each of them enrolling between 20 and 310 adult patients for a total of 876 adult patients. Three publications dealing with outpatient surgery (hospital stay \24 h, mainly coming from the US) were identified (2 prospective [5,8], 1 retrospective [19]), each of them enrolling between 4 and 557 adult patients for a total of 583 adult patients.…”