Table 1.
Patient’s baseline characteristics.
| Variables | Number (%) |
|---|---|
| Age (years) | |
| <25 | 195 (70.4) |
| ≥25 | 82 (29.6) |
| Gender | |
| Male | 172 (62.1) |
| Female | 105 (37.9) |
| Race/ethnicity | |
| White | 232 (83.8) |
| Black | 14 (5.1) |
| Other | 31 (11.2) |
| Tumor location | |
| Axial | 161 (58.1) |
| Extremity | 116 (41.9) |
| Tumor size | |
| ≤5 cm | 18 (6.5) |
| >5–10 cm | 95 (34.3) |
| >10 cm | 98 (35.4) |
| Unknown | 66 (23.8) |
| Regional nodal status | |
| Negative | 184 (66.4) |
| Positive | 42 (15.2) |
| Unknown | 51 (18.4) |
| Distant lymph node metastasis | |
| No | 251 (90.6) |
| Yes | 26 (9.4) |
| Bone metastasis | |
| No | 13 8(49.8) |
| Yes | 139 (50.2) |
| Lung metastasis | |
| No | 95 (34.3) |
| Yes | 182 (65.7) |
| Liver metastasis | |
| No | 263 (94.9) |
| Yes | 14 (5.1) |
| Brain metastasis | |
| No | 267 (96.4) |
| Yes | 10 (3.6) |
| Primary surgery | |
| No | 198 (71.5) |
| Yes | 79 (28.5) |
| Radiation therapy | |
| No | 94 (33.9) |
| Yes | 183 (66.1) |
| Chemotherapy | |
| No | 13 (4.7) |
| Yes | 264 (95.3) |
| Number of metastatic sites | |
| 1 | 204 (73.6) |
| 2 | 54 (19.5) |
| 3 | 17 (6.1) |
| 4 | 2 (0.7) |
| 5 | 0 (0) |