Table 1 Demographical characteristics of the study population

Age (years), median (range)

69

(28–80)

Gender

Male

176

(58.5)

Female

125

(41.5)

Performance status (ECOG)

0

184

(61.1)

1

78

(25.9)

2

22

(7.3)

3

14

(4.7)

4

3

(1.0)

Tumor location

Descending colon

63

(20.9)

Sigmoid colon

210

(69.8)

Upper rectum

28

(9.3)

Decompression for BTS

Stoma

23

(7.6)

SEMS

113

(37.5)

TADT

85

(28.2)

No

80

(26.6)

Change in decompression method

Yes

19

(6.3)

No

282

(93.7)

Depth of invasion (TNM)

T2

1

(0.3)

T3

187

(62.1)

T4 (T4a / T4b)

113

(85 / 28)

(37.5)

Lymph node metastasis (TNM)

N0

164

(54.5)

N1

109

(36.2)

N2

28

(9.3)

Number of harvested lymph nodes

<12

60

(19.9)

≥12

241

(80.1)

Stage (TNM)

II (IIA/IIB/IIC)

164

(100/48/16)

(54.5)

III (IIIA/IIIB/IIIC)

137

(1/110/26)

(45.5)

Adjuvant chemotherapy*

Stage II

51

(31.1)

Stage III

97

(70.8)

Postoperative complication

(Clavien-Dindo classification)

0

217

(72.1)

1

2

(0.7)

2

47

(15.6)

3

28

(9.3)

4

3

(1.0)

5

4

(1.3)

CEA (ng/mL)

Not measured

10

(3.3)

≤5

124

(41.2)

>5

167

(55.4)

CA 19-9 (U/mL)

Not measured

12

(4.0)

≤37

239

(79.4)

>37

50

(16.6)

NLR

Not measured

55

(18.3)

≤3

113

(37.5)

3<, ≤5

75

(24.9)

>5

58

(19.3)