Table 3.
Outcomes for the whole study population and for subgroups with and with no intraoperative adverse events
| All patients (n=2520) | Patients with no intraoperative adverse events (n=1910) | Patients with intraoperative adverse events (n=610) | Missing data (No (%)) |
|
|---|---|---|---|---|
| All iAE (several events per patient possible) | ||||
| 0 | 1910 (71) | 1910 (100) | — | — |
| I | 198 (7.4) | — | 198 (25) | — |
| II | 417 (16) | — | 417 (54) | — |
| III | 142 (5.3) | — | 142 (18) | — |
| IV | 21 (0.8) | — | 21 (3.0) | — |
| V | — | — | — | — |
| Total No of iAE per patient | ||||
| 0 | 1910 (76) | 1910 (100) | — | — |
| 1 | 485 (19) | — | 485 (80) | — |
| 2 | 92 (3.7) | — | 92 (15) | — |
| 3 | 27 (1.1) | — | 27 (4.4) | — |
| 4 | 3 (0.1) | — | 3 (0.5) | — |
| 5 | 2 (0.1) | — | 2 (0.3) | — |
| 6 | 1 (0.0) | — | 1 (0.2) | — |
| Transfer after operation | 677 (27) | 403 (21) | 274 (45) | — |
| Intermediate care unit | 347/677 (51) | 244/403 (61) | 103/274 (38) | — |
| Intensive care unit | 330/677 (49) | 159/403 (39) | 171/274 (62) | — |
| Unplanned | 45/677 (6.7) | 6/403 (1.5) | 39/274 (14) | — |
| Length of surgery (minutes; median (IQR, range)) | 100 (60-170, 4-760) | 90 (55-147, 4-760) | 151 (93-240, 12-673) | — |
| Most severe postoperative complication per patient | ||||
| 0 | 1682 (67) | 1367 (72) | 315 (52) | — |
| I | 349 (14) | 257 (13) | 92 (15) | — |
| II | 277 (11) | 162 (8.5) | 115 (19) | — |
| IIIa | 72 (2.9) | 45 (2.4) | 27 (4.4) | — |
| IIIb | 55 (2.2) | 40 (2.1) | 15 (2.5) | — |
| IVa | 53 (2.1) | 23 (1.2) | 30 (4.9) | — |
| IVb | 7 (0.3) | 3 (0.2) | 4 (0.7) | — |
| V | 25 (1.0) | 13 (0.7) | 12 (2.0) | — |
| All postoperative complications (several events per patient possible) | ||||
| I | 1106 (44) | 747 (48) | 359 (37) | — |
| II | 983 (39) | 557 (36) | 426 (44) | — |
| IIIa | 160 (6.4) | 94 (6.1) | 66 (6.8) | — |
| IIIb | 105 (4.2) | 72 (4.7) | 33 (3.4) | — |
| IVa | 110 (4.4) | 51 (3.3) | 59 (6.1) | — |
| IVb | 20 (0.8) | 9 (0.6) | 11 (1.1) | — |
| V | 25 (1.0) | 13 (0.8) | 12 (1.2) | — |
| Total No of postoperative complications per patient | ||||
| None | 1682 (67) | 1367 (72) | 315 (52) | — |
| 1 | 412 (16) | 288 (15) | 124 (20) | — |
| 2-5 | 329 (13) | 198 (10) | 131 (21) | — |
| >5 | 97 (3.9) | 57 (3.0) | 40 (6.6) | — |
| Reoperation | ||||
| No | 2421 (96) | 1844 (97) | 577 (95) | — |
| Any reoperation | 99 (3.9) | 66 (3.5) | 33 (5.4) | — |
| Total No of reoperations | ||||
| 1 | 68 (69) | 46 (70) | 22 (67) | — |
| 2 | 16 (16) | 11 (17) | 5 (15) | — |
| 3 | 6 (6.1) | 4 (6.1) | 2 (6.1) | — |
| 4 | 8 (8.1) | 5 (7.6) | 3 (9.1) | — |
| 5 | 1 (1.0) | ·· | 1 (3.0) | — |
| Postoperative length of hospital stay (days; median (IQR, range)) | 3 (2-6, 0-191) | 3 (1-5, 0-106) | 6 (3-9, 1-191) | — |
| Total length of hospital stay (days; median (IQR, range)) | 4 (2-8, 1-193) | 3 (2-7, 1-113) | 7 (3-11, 1-193) | — |
| Stay during postoperative course | 68 (2.7) | 40 (2.1) | 28 (4.6) | — |
| Intermediate care unit | 18 (26) | 15 (38) | 3 (11) | — |
| Intensive care unit | 50 (74) | 25 (63) | 25 (89) | — |
| 30 day mortality | 26 (1.1) | 13 (0.7) | 13 (2.1) | 148 (5.9) |
Data are number (%) unless stated otherwise. IQR=interquartile range; iAE= intraoperative adverse events.