Table 1 Demographic data of patients registered in the SCRCR 2007–2013 undergoing anterior resection for rectal cancer presented as all patients, rectal washout and no rectal washout
From: Rectal washout does not increase the complication risk after anterior resection for rectal cancer
All patients (n = 4821), n (%) | RW (n = 4317), n (%) | No RW (n = 504), n (%) | p value | ||
|---|---|---|---|---|---|
Age at primary surgery (years)a | 67 (14) | 67 (14) | 68 (16) | 0.057 | |
Gender | M | 2839 (58.9) | 2543 (58.9) | 296 (58.7) | 0.939 |
F | 1982 (41.1) | 1774 (41.1) | 208 (41.3) | 0.939 | |
ASA score | I | 1183 (24.5) | 1048 (24.3) | 135 (26.8) | 0.373 |
II | 2773 (57.5) | 2504 (58.0) | 269 (53.4) | ||
III | 739 (15.3) | 658 (15.2) | 81 (16.1) | ||
IV | 31 (0.6) | 28 (0.6) | 3 (0.6) | ||
V | 0 (0) | 0 (0) | 0 (0) | ||
Missing data | 95 (2.0) | 79 (1.8) | 16 (3.2) | ||
BMI (kg/m2)a | 25.31 (5) | 25.31 (5) | 25.15 (5) | 0.985 | |
Missing data | 361 | 303 | 58 | ||
Tumour height (cm) | Low 0–5 | 155 (3.2) | 135 (3.1) | 20 (4.0) | <0.001 |
Medium 6–10 | 2346 (48.7) | 2149 (49.8) | 197 (39.1) | ||
High 11–15 | 2281 (47.3) | 2011 (46.6) | 270 (53.6) | ||
Missing data | 39 (0.8) | 22 (0.5) | 17 (3.4) | ||
TNM stage | I | 1276 (26.5) | 1138 (26.4) | 138 (27.4) | 0.005 |
II | 1388 (28.8) | 1276 (29.6) | 112 (22.2) | ||
III | 1676 (34.8) | 1497 (34.7) | 179 (35.5) | ||
IV | 378 (7.8) | 326 (7.6) | 52 (10.3) | ||
Missing data | 103 (2.1) | 80 (1.9) | 23 (4.6) | ||
Preoperative RT | 2899 (60.1) | 2665 (61.7) | 234 (46.4) | <0.001 | |
Missing data | 2 (0) | 2 (0) | 0 (0) | ||
Preoperative CHT | 693 (14.4) | 629 (14.6) | 64 (12.7) | 0.255 | |
Missing data | 2 (0) | 2 (0) | 0 (0) | ||
Intraoperative perforation | No | 4676 (97.0) | 4202 (97.3) | 474 (94.0) | <0.001 |
Yes | 119 (2.5) | 94 (2.2) | 25 (5.0) | ||
Missing data | 26 (0.5) | 21 (0.5) | 5 (1.0) | ||
Emergency procedure | No | 4767 (98.9) | 4278 (99.1) | 489 (97.0) | <0.001 |
Yes | 29 (0.6) | 18 (0.4) | 11 (2.2) | ||
Missing data | 25 (0.5) | 21 (0.5) | 4 (0.8) | ||
Laparoscopic surgery | Yes | 397 (8.2) | 314 (7.3) | 83 (16.5) | <0.001 |
No | 4392 (91.1) | 3977 (92.1) | 415 (82.3) | ||
Missing data | 32 (0.7) | 26 (0.6) | 6 (1.2) | ||
Operative time (min)a | 231 (125) | 235 (126) | 207 (122) | <0.001 | |
Missing data | 142 | 117 | 25 | ||
Blood loss (ml)a | 400 (500) | 400 (500) | 350 (500) | 0.430 | |
Missing data | 186 | 153 | 33 | ||
Temporary stoma | 3595 (74.6) | 3329 (77.1) | 266 (52.8) | <0.001 | |
Missing data | 11 (0.2) | 8 (0.2) | 3 (0.6) | ||
Surgical competence | Colorectal | 4728 (98.1) | 4246 (98.4) | 482 (95.6) | <0.001 |
General | 47 (1.0) | 32 (0.7) | 15 (3.0) | ||
Missing data | 46 (1.0) | 39 (0.9) | 7 (1.4) | ||
Length of hospital stay (days)a | 10 (7) | 10 (7) | 10 (8) | 0.220 | |
Missing data | 13 | 11 | 2 | ||
Radicality | R0 | 4116 (98.0) | 3726 (98.2) | 390 (95.8) | <0.001 |
R1 | 79 (1.9) | 66 (1.7) | 13 (3.2) | ||
R2 | 5 (0.1) | 1 (0) | 4 (1.0) |