Timing of operations
| Period | Total procedures | Time of surgery; no. (%) | |||
|---|---|---|---|---|---|
| 8 am to 4 pm | 4 pm to midnight | Midnight to 8 am | 4 pm to 8 pm | ||
| Period 1, pre-ACSS | 51 | 19 (37) | 26 (51) | 6 (12) | 32 (63) |
| Period 2, newly formed ACSS | 107 | 38 (36) | 54 (50) | 15 (14) | 69 (64) |
| Period 3, established ACSS | 109 | 34 (31) | 54 (50) | 21 (19) | 75 (69) |
ACSS = acute care surgical service.