Table 2 Risk factors for preoperative VTE

Variable

p value

Age ≥50 years

<0.01

Age ≥55 years

<0.01

History of VTE

<0.01

Ovarian cancer

<0.01

Tumor diameter ≥10 cm

<0.01

Tumor diameter ≥20 cm

<0.01

Multivariate analysis

Variable

Risk ratio

95% CI

p value

Lower

Upper

History of VTE

34.596

2.003

597.612

<0.05

Age ≥50 years

2.368

0.657

8.531

0.187

Ovarian cancer

20.521

5.046

83.455

<0.01

Tumor diameter ≥10 cm

6.442

1.280

32.412

<0.05

Heart disease

0.763

0.032

18.2

0.867