Table 2.

The risk factors of patients with PE separated by gender

	Risk factor	Male(%)	Female(%)	P-value
Blood flow stagnation	Obesity	20 (15)	17 (13)	0.63
	Long-term bed rest	18 (13)	23 (17)	0.37
	Sitting for a long time	3 (2)	4 (3)	0.69
	Cardiopulmonary disease	4 (3)	7 (5)	0.34
	Trauma, Fracture, Cast fixed	11 (8)	8 (6)	0.50
	Central venous catheter	0 (0)	1 (1)	0.31
	Surgery	9 (7)	9 (7)	0.97
Vascular endothelial disorder	Antiphospholipid antibody syndrome and collagen disease	6 (4)	2 (1)	0.16
	Past medical history of VTE	2 (1)	1 (1)	0.57
	Cancer	24 (18)	23 (17)	0.92
Hypercoagulability	OCs, LEP, Steroids	2 (1)	5 (4)	0.24
	Infection	18 (13)	17 (13)	0.89
	Inflammatory enteric disease	1 (1)	2 (1)	0.55
	Polycythemia	1 (1)	1 (1)	0.99
	Protein C or Protein S deficiency	2 (1)	0 (0)	0.16
	Dehydration	4 (3)	6 (5)	0.50
	No risk factor	9 (7)	6 (5)	0.44