Sample sizes by COVID-19 period
| Category | Total | No. (%); period | |||
|---|---|---|---|---|---|
| Pre-COVID-19 | COVID-19* | COVID-19 (nonelective period) | COVID-19 (elective period) | ||
| Physicians | 8968 | 8219 (92) | 6978 (78) | 4923 (55) | 6430 (72) |
| Patients | 1 104 299 | 931 918 (84) | 211 686 (19) | 50 286 (5) | 165 713 (15) |
| Hospitals | 478 | 452 (95) | 366 (77) | 294 (62) | 338 (71) |
| Distinct OR procedures | 1877 | 1877 (100) | 1877 (100) | 1381 (74) | 1796 (96) |
OR = operating room.
↵* Combination of both the elective and nonelective periods.