Fig. 2. Percentage of turnovers that were prolonged and occurred at a specified hour of the day for Hospital B. The time along the horizontal axis is the start of the hour of the day ( e.g. , 9 means that the patient exited the OR between 9:00 and 9:59). The vertical lines show 95% lower and upper confidence intervals (CIs), with corrections for multiple comparisons. The percentage of turnovers that were prolonged and occurred at a specified hour peaked in the middle of the workday, in part because most turnovers occurred in the middle of the workday ( table 3 , right side).