Table 3.
Overview of postoperative surgical outcomes for all included patients undergoing surgery in 2020 compared with historical reference cohort (2018–2019)
| 2018–2019 (n = 28 142) | 2020 (n = 12 154) | P§ | |
|---|---|---|---|
| Duration of hospital stay (days), median i.q.r.) | 4 (2–8) | 4 (2–8) | 0.064¶ |
| Oncological | 6 (4–10) | 5 (3–9) | <0.001¶ |
| Non-oncological | 2 (1–6) | 3 (1–6) | <0.001¶ |
| Severe complication * | 2346 (8.3) | 1052 (8.7) | 0.021 |
| Oncological | 2031 (16.4) | 912 (16.0) | 0.498 |
| Non-oncological | 315 (2.0) | 140 (2.2) | 0.08 |
| Not registered† | 7753 (27.5) | 3733 (30.7) | |
| Missing | 45 (0.2) | 9 (0.1) | |
| Readmission within 30 days | 1659 (5.9) | 751 (6.2) | 0.448 |
| Oncological | 1165 (9.4) | 558 (9.8) | 0.424 |
| Non-oncological | 494 (3.0) | 193 (3.1) | 0.728 |
| Not-registered† | 5410 (19.2) | 2138 (17.6) | |
| Missing | 183 (0.7) | 111 (0.9) | |
| Postoperative death | 819 (2.9) | 373 (3.1) | 0.373 |
| Oncological | 298 (2.4) | 150 (2.7) | 0.063 |
| Non-oncological | 521 (3.4) | 212 (3.3) | 0.894 |
| COVID-19‡ | 11 (0.1) | ||
| ICU admission | 4733 (16.8) | 1999 (16.5) | <0.001 |
| Oncological | 2698 (21.7) | 1106 (19.4) | <0.001 |
| Non-oncological | 2035 (13.0) | 893 (13.9) | <0.001 |
| Not registered† | 4220 (15.0) | 2138 (17.5) | |
| Missing | 1082 (3.8) | 188 (1.5) | |
| Duration of ICU stay (days), median (i.q.r.) | 0 (0–1) | 0 (0–1) | <0.001¶ |
| Oncological data | n = 12 432 | n = 5712 | |
| Resection margin status | <0.001 | ||
| R0 | 9356 (75.3) | 4171 (73.0) | |
| R1 | 624 (5.0) | 368 (6.4) | |
| R2 | 466 (3.7) | 175 (3.1) | |
| Unknown | 708 (5.7) | 353 (6.2) | |
| Non-malignant disease | 375 (6.2) | 203 (3.6) | |
| Not-registered† | 862 (6.9) | 420 (7.2) | |
| Missing | 466 (3.7) | 175 (3.1) | |
| Disease stage | <0.001 | ||
| 0 | 306 (2.5) | 138 (2.4) | |
| I | 2629 (21.1) | 1087 (19.0) | |
| II | 2437 (19.6) | 1193 (20.9) | |
| III | 2613 (21.0) | 1163 (20.4) | |
| IV | 407 (3.3) | 177 (3.1) | |
| X | 174 (1.4) | 122 (2.1) | |
| Non-malignant disease | 642 (5.2) | 353 (6.2) | |
| Not registered† | 3461 (19.1) | 1127 (19.7) | |
| Missing | 352 (1.9) | 32 (0.6) |
Values are n (%) unless otherwise indicated.
*
Needing reintervention, ICU admission and/or causing death. †Variable not registered in certain surgery-specific audits. An overview of registered variables that are available in only a selection of audits is provided in Table S1. Non-registered data were excluded from analyses. ‡Patients with a confirmed perioperative COVID-19 infection who died after surgery from any cause (including non-COVID related causes). §Pearson’s χ2 test, except ¶Mann–Whitney U test.