TABLE 1

Patient Characteristics for Variables Considered in This Analysis (n = 234)

Variable	Level	Frequency	Percentage
Sex	M	124	54
	F	106	46
Metastatic disease at diagnosis	Yes	41	18
	No	189	82
Prestudy tumor grade^*	Low	36	16
	Intermediate	72	32
	High	118	52
Tumor subtype	Bone	63	27
	Cartilage	18	8
	Soft tissue	149	65