Patient Characteristics
| Characteristic | No. of patients | Percentage of patients |
| Sex | ||
| Female | 17 | 50 |
| Male | 17 | 50 |
| Race | ||
| White | 18 | 53 |
| Black | 13 | 38 |
| Asian and white | 1 | 3 |
| Multiple races | 1 | 3 |
| Other | 1 | 3 |
| Histology of tumor | ||
| OS, not further specified | 29 | 85 |
| Chondroblastic OS | 2 | 6 |
| Telangiectatic OS | 2 | 6 |
| Fibroblastic OS | 1 | 3 |
| Primary site of tumor | ||
| Femur | 17 | 50 |
| Tibia | 9 | 26 |
| Humerus | 5 | 15 |
| Fibula | 1 | 3 |
| Mandible | 1 | 3 |
| Radius | 1 | 3 |
| Stage | ||
| Localized, resectable | 25 | 74 |
| Metastatic | 9 | 26 |
Median age of patients at study enrollment was 12.2 y (range, 6.8–19.1 y).