Table 3 Risks for lethal outcome

Age

≧ 56 years

4

42

0.42

< 56 years

6

43

Sex

Male

7

47

0.34

Female

3

38

Site

Upper extremity

1

14

0.54

Lower extremity

6

47

Trunk

3

24

Origin

Bone

4

19

0.14

Soft tissue

6

66

Histological grade

Low

1

37

0.03

0.01

3.9

High

9

48

Extracompartment extension

No

1

36

0.04

0.04

5.9

Yes

9

49

Tumor size

≧ 50 mm

8

57

0.29

< 50 mm

2

28

Surgical margin

Adequate

7

74

0.12

Inadequate

3

11

D-dimer levels

≧ 0.8 μg/ml

8

44

0.0004

0.004

7.3

< 0.8 μg/ml

2

41