Table 1.

Demographic and clinical characteristics of osteosarcoma patients

Characteristics	N	%
Age
≤ 20	123	57.48
> 20	91	42.52
Gender
Male	133	62.15
Female	81	37.85
Stage
I-II	141	65.89
III-IV	73	34.11
Tumor location
Long tubular bones	158	73.83
Axial skeleton	56	26.17
Therapy
Amputation	51	23.83
Limb salvage	163	76.17
Metastasis
Yes	54	25.23
No	161	75.23