Table 1.
Characteristics of patients included in the study. “One-vs-rest” tests for statistical significance in location distribution (e.g. Foot vs. Rest) were performed with Bonferroni-corrected p-values used for significance. ***Statistically significant
| Benign (N=582) | Malignant (N=478) | p-value | |
|---|---|---|---|
| Age (years ± SD) | 27 ± 20 | 34 ± 25 | <0·001*** |
| Sex (%) | 0·79 | ||
| Male | 342 (59%) | 277 (58%) | |
| Female | 240 (41%) | 201 (42%) | |
| Location (%) | <0·001*** | ||
| Clavicle | 3 (0.7%) | 5 (1.7%) | 0.52 |
| Cranium | 12 (2.6%) | 55 (18.3%) | <0·001*** |
| Proximal femur | 74 (16.1%) | 35 (11.6%) | 0.0055 |
| Distal femur | 80 (17.4%) | 57 (18.9%) | 0.43 |
| Foot | 89 (19.3%) | 5 (1.7%) | <0·001*** |
| Proximal radius | 0 (0%) | 1 (0.3%) | 0.92 |
| Distal radius | 13 (2.8%) | 0 (0%) | 0.0026 |
| Proximal ulna | 4 (0.9%) | 2 (0.7%) | 0.87 |
| Distal ulna | 1 (0.2%) | 0 (0%) | 0.92 |
| Hand | 29 (6.3%) | 1 (0.3%) | <0·001*** |
| Hip | 41 (8.9%) | 62 (20.6%) | 0.0017 |
| Proximal humerus | 34 (7.4%) | 33 (11%) | 0.56 |
| Distal humerus | 16 (3.5%) | 8 (2.7%) | 0.34 |
| Proximal tibia | 65 (14.1%) | 37 (12.3%) | 0.075 |
| Distal tibia | 11 (2.4%) | 4 (1.3%) | 0.24 |
| Proximal fibula | 6 (1.3%) | 10 (3.3%) | 0.24 |
| Distal fibula | 4 (0.9%) | 1 (0.3%) | 0.5 |
| Mandible | 3 (0.7%) | 7 (2.3%) | 0.2 |
| Rib/Chest wall | 6 (1.3%) | 19 (6.3%) | 0.0033 |
| Scapula | 10 (2.2%) | 7 (2.3%) | 0.93 |
| Spine | 81 (17.6%) | 129 (42.9%) | <0·001*** |