Tumour type

Ulcerative

1

1

Vegetative

0.85 (0.63; 1.15)

0.292

0.88 (0.64; 1.23)

0.462

Mixed

0.87 (0.56; 1.35)

0.542

0.97 (0.61; 1.53)

0.886

Stricture

1.02 (0.50; 2.07)

0.967

1.22 (0.56; 2.64)

0.621

Serosal involvement

No-ref.

1

1

Yes

1.42 (1.09; 1.85)

0.011

0.90 (0.66; 1.22)

0.498

Radicality

No residual tumor-ref.

1

1

Residual tumor

5.22 (3.71; 7.35)

<0.001

12.30 (1.48; 102.61)

0.020

Reoperation

No-ref.

1

1

Reoperation

1.77 (1.21; 2.60)

0.004

1.70 (1.12; 2.57)

0.013

Perioperative blood transfusion

No-ref.

1

1

Yes

1.63 (1.26; 2.11)

<0.001

1.31 (0.96; 1.78)

0.088