Table 1 Patient and tumour characteristics
n = 13,766 | n (%) |
|---|---|
Gender | |
Male | 6694 (48.6) |
Female | 7072 (51.4) |
Age (years) | |
< 65 | 2011 (14.6) |
65–75 | 6528 (47.4) |
> 75 | 5227 (38.0) |
Location | |
Right | 7265 (52.8) |
Left | 6501 (47.2) |
Location, tumor subsite | |
Coecum | 2718 (19.7) |
Ascending colon | 1859 (13.5) |
Hepatic flexure | 993 (7.2) |
Transverse colon | 1104 (8.0) |
Splenic flexure | 591 (4.3) |
Descending colon | 580 (4.2) |
Sigmoid colon | 5921 (43.0) |
T stage | |
pT1 | 728 (5.3) |
pT2 | 1566 (11.4) |
pT3 | 9078 (65.9) |
pT4 | 2303 (16.7) |
Missing value | 91 (0.7) |
N stage | |
N0 | 8607 (62.5) |
N1 | 3232 (23.5) |
N2 | 1927 (14.0) |
Priority of surgery | |
Elective | 11,918 (86.6) |
Acute | 1845 (13.4) |
Missing value | 3 (0.0) |
Type of surgery | |
Open | 9683 (70.3) |
Laparoscopic | 4080 (29.6) |
Missing value | 3 (0.0) |
Blood transfusion | |
Transfusion | 3140 (22.8) |
No transfusion | 10,036 ( 72.9) |
Missing value | 590 (4.3) |
Postoperative anastomotic leak | |
No leak Leak Missing value | 12,432 (90.3) 744 (5.4) 590 (4.3) |
Total lymph node yield | |
Median (quartiles) | 15 (11–22) |
Lymph node yield | |
0–5 | 1001 (7.3) |
6–11 | 2938 (21.3) |
12–17 | 4439 (32.2) |
≥ 18 | 5388 (39.1) |
ASA score | |
ASA I | 2673 (20.3) |
ASA II | 7280 (55.3) |
ASA III | 2981 (22.6) |
ASA IV | 233 (1.8) |
Missing value | 9 (0.0) |
Charlson score | |
1 | 8349 (60.6) |
2 | 1730 (12.6) |
3 | 720 (5.2) |
4 | 2377 (17.3) |
Missing value | 590 (4.3) |