Table 5. Univariate analysis of event-free survival.

Charasteristic		5-year EFS	P
Age	<40 years	49.1	0.517
	≥40 years	53.9
Gender	Male	52.6	0.350
	Female	45.7
Location	Extremity	49.8	0.904
	Trunk	44.4
Metastasis	Absent	71.2	<0.001**
	Present	0
Histological response	necrosis<90%	60.7	0.040*
	necrosis≥90%	33.7
X-ray	Good	47.2	0.478
	Poor	57.6
Angiography	Good	55.6	0.143
	Poor	33.3
MRI	ΔEM≥30%	52.6	0.501
	ΔEM<30%	44.7
201Tl	ΔUR≥30%	54.9	0.565
	ΔUR<30%	47.0
99mTc-MIBI	ΔUR≥30%	55.8	0.385
	ΔUR<30%	43.3
CRS	≥60%	54.5	0.328
	<60%	42.0

^* P<0.05,

^** P<0.01.