Table 1.

The demographic data of the patients with different bone cancers.

Variable		Age		Gender		Tumor grade		Metastasis		Chemotherapy		Recurrence
Patient	Group	≤40	≥40	Male	Female	Low	High	Positive	Negative	Positive	Negative	Positive	Negative
Osteosarcoma (n = 27)		12	15	13	14	9	18	10	17	18	9	7	20
Chondrosarcoma(n = 27)		0	27	16	11	15	12	8	19	0	27	0	0
Ewing sarcoma (n = 27)		15	12	17	10	8	19	10	17	15	12	7	20
Exostosis (n = 24)		13	11	15	9	0	0	0	0	0	0	0	0
Giant Cell Tumor (n = 24)		8	16	16	8	0	0	0	0	0	0	0	0
Osteochondroma (n = 24)		6	18	15	9	0	0	0	0	0	0	0	0