Variable

Bivariate model-PILOT

Multivariate model-PILOT

HR (95% CI)

p-value

HR (95% CI)

p-value

Indication

Acute

Planned-ref.

Tumor perforation

No-ref.

Pre-operative perforation

Per-operative perforation

Duration of surgery

TNM-stage

Stage I

Stage II

Stage III-ref.

Reoperation

No-ref.

Anastomotic leakage

Other

Localisation

Right colon + transversum

Left colon

Rectum-ref.

Surgeon

1.52 (0.89; 2.58)

1

1

0.95 (0.35; 2.60)

3.46 (1.09; 10.98)

1.004 (1.001; 1.007)

0.03 (0.004; 0.21)

0.31 (0.20; 0.48)

1

1

2.49 (1.004; 6.15)

1.96 (0.85; 4.51)

0.78 (0.48; 1.27)

0.52 (0.30; 0.92)

1

0.127

-

0.924

0.035

0.008

<0.001

<0.001

-

-

0.049

0.113

0.319

0.024

2.30 (1.22; 4.34)

1

1

0.53 (0.17; 1.61)

1.72 (0.42; 7.01)

1.004 (0.999; 1.01)

0.03 (0.004;0.22)

0.28 (0.17; 0.45)

-

1

2.34 (0.83; 6.59)

2.48 (1.03; 5.97)

0.75 (0.40; 1.40)

0.45 (0.23; 0.87)

1

0.010

-

-

0.260

0.453

0.095

0.001

<0.001

-

-

0.108

0.042

0.365

0.018

-

Resident

Fellow

Consultant-ref.

Age

Sex

Male-ref.

Woman

1.02 (0.54; 1.93)

0.94 (0.58; 1.53)

1

0.98 (0.96; 0.99)

1

1.11 (0.72; 1.70)

0.957

0.811

-

0.005

-

0.644

1.16 (0.57; 2.33)

1.05 (0.63; 1.75)

1

0.98 (0.96; 0.998)

1

1.27 (0.79; 2.02)

0.688

0.853

-

0.033

-

0.325