Table 1.

Patient characteristics and 5-year EFS

Variable	No. of cases	Percentage	5-year EFS (%)	P
Age (years)
<14	16	37	25	0.8
≥14	27	63	33
Gender
Male	23	53	29	0.89
Female	20	47	31
Volume (ml)
<150	21	49	30	0.87
≥150	22	51	31
Site
Spine	26	61	46	0.01
Sacrum	17	39	6
Local therapy
Radiotherapy	26	81	34	0.4
R × T + surgery	17	9	12