“…29,30,[33][34][35][36]41,43,46 A minority of studies found a favorable impact on resident well-being (4 of 17, 24%; TABLE 2). 32,33,45,48 When analyzed by intervention type, the most frequent result of shift length changes was no impact (8 of 20, 40%), 23,24,27,28,31,32,34,35 that of night float was an unfavorable impact (10 of 18, 56%), [35][36][37][38][39][41][42][43]46,47 and for protected time for sleep, 1 study reported a favorable outcome for resident wellness (1 of 2, 50%) 48 but no impact on patient care, while the other study was unfavorable for resident well-being (1 of 2, 50%). 49 …”