Centre characteristics
| Variable | n (%)* |
| Major trauma centre | 17 (23) |
| Population size | 709 (753); 500 (350, 780) |
| Dedicated 24-hour on-call specialist service | 28 (38) |
| Were patients assessed for the first time in person on the day of surgery? | |
| No | 45 (61) |
| Yes | 24 (32) |
| Unsure | 5 (7) |
| Date stopping of elective practice | |
| Stopped | 72 (97) |
| 8–14 March | 7 (10) |
| 15–21 March | 37 (51) |
| 22–28 March | 22 (31) |
| 29 March–1 April | 6 (8) |
| Daily general anaesthesia access | 58 (78) |
| Daily regional anaesthesia access | |
| No | 36 (49) |
| Yes | 36 (49) |
| Unsure | 2 (3) |
Mean (SD); median (IQR) is given for continuous variables instead of n (%), n=74.