Table 3: Gender, Operation Time, Intraoperative Blood loss and Age with or without VTE.

VTE(+) VTE(-) P value
Gender, male/female 13/87 153/567 0.46
Operation Time, mean, min 70.5 74.5 0.22
Intraoperative Blood loss, mean, min 334.2 226.2 0.96
Age, mean, y 74.1 59.3 <0.001

The incidence of VTE was significantly higher in elder age (p>0.001).