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Table 1 Patient and tumour characteristics

From: Lymph node yield and tumour subsite are associated with survival in stage I–III colon cancer: results from a national cohort study

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)
  1. ASA American Society of Anaesthesiologists