Table 3.

Risk score chart for thrombosis in patients with lower extremity fractures.

Risk factor		Coef	Nomogram	Point
Age		0.0192	1.728
	10			0
	20			10
	30			20
	40			30
	50			40
	60			50
	70			60
	80			70
	90			80
	100			90
	110			100
BMI		0.0484	2.45
	10			0
	12			5
	14			10
	16			15
	18			20
	20			25
	22			29
	24			34
	26			39
	28			44
	30			49
	32			54
	34			59
	36			64
	38			69
	40			74
Fracture fixation type
	External fixation	Ref	Ref	0
	Other types	0.3808	0.3808	20
	Internal fixation	0.9015	0.9015	52
Energy
	Low	Ref	Ref	0
	High	0.4054	0.4054	23
Blood transfusion
	No	Ref	Ref	0
	Yes	0.3868	0.3868	22
Anticoagulation drugs
	Yes	Ref	Ref	0
	No	1.1537	1.1537	58