Table 1.
Patients and tumor characteristics.
| Characteristic | Adult center (%) | Pediatric center (%) | Total (%) | P |
|---|---|---|---|---|
| Age | .0003 | |||
| ≤5 years | 0 (0) | 2 (13.3) | 2 (2.0) | |
| 6–17 years | 5 (5.7) | 12 (80) | 17 (16.7) | |
| 18–40 years | 44 (50.6) | 1 (6.7) | 45 (44.1) | |
| >40 years | 38 (43.7) | 0 (0) | 38 (37.2) | |
|
| ||||
| Gender | .16 | |||
| Female | 42 (48.3) | 4 (26.7) | 46 (45) | |
| Male | 45 (51.7) | 11 (73.3) | 56 (55) | |
|
| ||||
| Tumour size | .5 | |||
| <5 cm | 31 (35.6) | 4 (26.7) | 35 (34.3) | |
| ≥5 cm | 56 (64.4) | 9 (60) | 65 (63.7) | |
| unknown | 0 | 2 (13.3) | 2 (2.0) | |
|
| ||||
| Depth | .69 | |||
| Superficial | 11 (12.6) | 1 (6.7) | 12 (11.8) | |
| Deep | 75 (86.2) | 14 93.3) | 89 (87.2) | |
| Unknown | 1 (1.1) | 0 (0) | 1 (1%) | |
|
| ||||
| Site | .0001 | |||
| Upper extremity | 26 (29.9) | 2 (13.3) | 28 (27.4) | |
| Lower extremity | 53 (60.1) | 5 (33.3) | 58 (56.9) | |
| Pelvic | 0 (0) | 1 (6.7) | 1 (1) | |
| Shoulder | 0 (0) | 1 (6.7) | 1 (1) | |
| Other | 8 (92) | 6 (40) | 14 (13.7) | |
|
| ||||
| Margins | .85 | |||
| Negative | 80 (92.0) | 14 (93.3) | 94 (92.2) | |
| Microscopic positive | 7 (8.0) | 1 (6.7) | 8 (7.8) | |
|
| ||||
| Bone invasion | .2 | |||
| Present | 10 (11.5) | 0 (0) | 10 (9.8) | |
| Absent | 65 (74.7) | 15 (100) | 80 (78.4) | |
| Unknown | 12 (13.8) | 0 (0) | 12 (11.8) | |
|
| ||||
| Neurovascular Invasion | .58 | |||
| Present | 6 (6.9) | 0 (0) | 6 (5.9) | |
| Absent | 69 (79.3) | 15 (100) | 84 (82.3) | |
| Unknown | 12 (13.8) | 0 (0) | 12 (11.8) | |
|
| ||||
| Radiation therapy | .01 | |||
| Yes | 72 (82.8) | 8 (53.3) | 80 (78.4) | |
| No | 14 (16.1) | 7 (46.7) | 21 (20.6) | |
| Unknown | 1 (1.1) | 0 (0) | 1(1) | |
|
| ||||
| Chemotherapy | .0004 | |||
| Yes | 12 (13.8) | 13 (86.7) | 25 (24.5) | |
| No | 75 (86.2) | 2 (13.3) | 77 (75.5) | |