Covariate

Unadjusted model

Adjusted model

HR (95% CI)

p-value

HR (95% CI)

p-value

Age

Gender

Male

Female-ref.

Comorbidity

None

Comorbidity

Indication

Emergency

Planned-ref.

Type of surgery

Right hemicolectomy-ref.

Ileocecal resection

Transversum resection

Left hemicolectomy

Sigmoid resection

Hartmann’s procedure

Subtotal colectomy

Tumour adherence

No-ref.

Yes

Lymph node dissection

D1-ref.

D2

Unknown

TNM-stage

Stage I-ref.

Stage II

Stage III

Stage IV

Tumour perforation

No perforation-ref.

Pre/per-op perforation

Blood transfusion

No-ref.

Yes

Serosal involvement

No-ref.

Yes

Reoperation

No-ref.

Reoperation

1.03 (1.02; 1.04)

1.32 (1.10; 1.59)

1

0.70 (0.57; 0.85)

1

1.71 (1.40; 2.09)

1

1

2.55 (1.31; 4.97)

1.89 (1.18; 3.02)

0.96 (0.72; 1.28)

1.14 (0.91; 1.43)

1.84 (1.11; 3.06)

0.70 (0.36; 1.35)

1

1.29 (0.996; 1.66)

1

0.48 (0.40; 0.59)

0.51 (0.37; 0.69)

0.11 (0.07; 0.17)

0.15 (0.12; 0.19)

0.23 (0.17; 0.29)

1

1

1.10 (0.79; 1.52)

1

1.48 (1.20; 1.82)

1

1.19 (0.99; 1.43)

1

1.81 (1.32; 2.48)

<0.001

0.003

<0.001

<0.001

0.006

0.008

0.781

0.263

0.018

0.284

0.054

<0.001

<0.001

<0.001

<0.001

<0.001

0.586

<0.011

0.069

<0.001

1.04 (1.03; 1.05)

1.37 (1.14; 1.66)

1

0.71 (0.58; 0.88)

1

1.52 (1.21; 1.93)

1

1

1.45 (0.73; 2.89)

1.43 (0.87; 2.36)

1.39 (1.03; 1.87)

1.17 (0.92; 1.48)

1.39 (0.80; 2.42)

0.76 (0.38; 1.52)

1

1.30 (0.98; 1.74)

1

0.66 (0.53; 0.83)

0.78 (0.56; 1.07)

0.10 (0.06; 0.16)

0.14 (0.11; 0.19)

0.23 (0.18; 0.30)

1

1

0.81 (0.55; 1.19)

1

1.25 (1.01; 1.55)

1

1.03 (0.82; 1.29)

1

1.35 (0.96; 1.89)

<0.001

0.001

0.002

<0.001

0.288

0.156

0.031

0.201

0.242

0.438

0.070

<0.001

0.124

<0.001

<0.001

<0.001

0.277

0.044

0.802

0.081