Table 5 Multivariate analysis of severe bleeding

Gastrectomy

1.91

0.006

6.77

1.73

26.50

Intestinal surgery

− 0.85

0.001

0.43

0.26

0.71

Colorectal surgery

0.64

0.010

1.90

1.17

3.10

Appendectomy

− 1.65

<0.001

0.19

0.08

0.46

Laparotomy

1.69

<0.001

5.43

2.23

13.21

Renal failure

0.95

0.004

2.59

1.35

4.99

Malignancy

0.44

0.029

1.55

1.05

2.29

Antithrombotic drug

− 0.32

0.193

0.73

0.45

1.17

 Antiplatelet drug

− 0.34

0.204

0.71

0.42

1.21

 Anticoagulant drug

0.25

0.508

1.29

0.61

2.71

Dual antithrombotic drug

− 0.42

0.480

0.66

0.21

2.10