Table 1. Characteristics of Children With Extraskeletal Ewing Sarcoma and Skeletal Ewing Sarcoma
| Characteristic | Extraskeletal Ewing Sarcoma | Skeletal Ewing Sarcoma | P Value |
| Mean age (range), years | 20 (0-39) | 16 (0-39) | <.001 |
| Male gender | 53% | 63% | <.001 |
| White (non-white race) | 85% (15%) | 93% (8%) | <.001 |
| Axial primary sites (non-axial primary) | 73% (27%) | 54% (46%) | <.001 |
| Pelvic primary sites (non-pelvic primary) | 20% (80%) | 27% (73%) | .001 |
