TABLE 6.
Anastomotic leak characteristics
| AL characteristics | AL A/B | AL C | Total | P | |
|---|---|---|---|---|---|
| Total | 227 (46.0) | 267 (54.0) | 494 (100) | ||
| Medical complication | No | 182 (46.3) | 211 (53.7) | 393 (100) | 1.000 |
| Yes | 40 (46.0) | 47 (54.0) | 87 (100) | ||
| (Missing) | 5 (35.7) | 9 (64.3) | 14 (100) | ||
| Clavien–Dindo grade | I–II | 130 (96.3) | 5 (3.7) | 135 (100) | <0.001 |
| III+ | 93 (26.3) | 261 (73.7) | 354 (100) | ||
| (Missing) | 4 (80.0) | 1 (20.0) | 5 (100) | ||
| Protective ‐ostomy | No | 80 (32.5) | 166 (67.5) | 246 (100) | <0.001 |
| Ileostomy | 121 (61.1) | 77 (38.9) | 198 (100) | ||
| Colostomy | 16 (50.0) | 16 (50.0) | 32 (100) | ||
| (Missing) | 10 (55.6) | 8 (44.4) | 18 (100) | ||
| Reoperation for leak | No | 161 (94.2) | 10 (5.8) | 171 (100) | <0.001 |
| Yes | 50 (16.4) | 255 (83.6) | 305 (100) | ||
| (Missing) | 16 (88.9) | 2 (11.1) | 18 (100) | ||
| 30‐day mortality | No | 225 (47.3) | 251 (52.7) | 476 (100) | 0.007 |
| Yes | 1 (7.1) | 13 (92.9) | 14 (100) | ||
| (Missing) | 1 (25.0) | 3 (75.0) | 4 (100) | ||
| Timing for diagnosis | Early (by 20 days) | 113 (46.3) | 131 (53.7) | 244 (100) | 0.005 |
| Late (>20 days) | 40 (67.8) | 19 (32.2) | 59 (100) | ||
| (Missing) | 74 (38.7) | 117 (61.3) | 191 (100) | ||
Bold indicated significance value (P < 0.05).
Abbreviations: AL, anastomotic leak; AL A/B, type A and B ALs, according to the International Study Group of Rectal Cancer grading; AL C, type C according to the International Study Group of Rectal Cancer grading.