Table 1: Postoperative bleeding complications in control and clopidogrel therapy groups.

Features and parametersAnticoagulant therapyComparison
Control versus clopidogrel
ControlClopidogrel
Number of total cases527123

Demographic features
Age (years)73 ± 1076.0 ± 7.9 = 0.001
Male/female255/272101/22 < 0.001

Dignity of tumor
Benign25655No significant difference
()
Malignant27168

Postoperative bleeding
No bleeding 518117
Bleeding96
Bleeding incidence 
95% confidential interval
1.7% 
0.9–3.2%
4.9% 
2.3–10.2%

Time of bleeding after surgery
Same day51Too small sample size for statistic evaluation
Day 134
Day 310
Day 401