ICR classification and correlations with clinicopathological characteristics
| Characteristics | N | ICR1 | ICR2-4 | P value* |
| n=491 (34%) | n=964 (66%) | |||
| Median age (range), years | 604 | 57.76 (2–91) | 63.86 (11–93) | 4.65E−06 |
| Sex | ||||
| Female | 333 | 106 (54%) | 227 (47%) | 0.0853 |
| Male | 348 | 89 (46%) | 259 (53%) | |
| Tumor site | ||||
| Extremity | 208 | 58 (40%) | 150 (43%) | 0.782 |
| Head and neck | 9 | 2 (1%) | 7 (2%) | |
| Internal trunk | 195 | 57 (39%) | 138 (39%) | |
| Superficial trunk | 84 | 28 (19%) | 56 (16%) | |
| Depth | ||||
| Deep | 195 | 61 (94%) | 134 (80%) | 1.92E−02 |
| Superficial | 37 | 4 (6%) | 33 (20%) | |
| Pathological type | ||||
| Leiomyosarcoma | 341 | 119 (25%) | 222 (23%) | 2.59E−11 |
| Liposarcoma | 476 | 151 (31%) | 325 (34%) | |
| Undifferentiated sarcoma | 330 | 86 (18%) | 244 (26%) | |
| Myxofibrosarcoma | 105 | 25 (5%) | 80 (8%) | |
| Other | 177 | 100 (21%) | 77 (8%) | |
| Pathological tumor size, median (range), cm | 241 | 10 (1.6–39.5) | 9 (1.2–36) | 0.113 |
| Pathological FNCLCC grade | ||||
| 1–2 | 165 | 52 (40%) | 113 (41%) | 0.92 |
| 3 | 240 | 78 (60%) | 162 (59%) | |
| CINSARC risk | ||||
| Low | 763 | 242 (49%) | 521 (54%) | 0.0963 |
| High | 692 | 249 (51%) | 443 (46%) |
*Student’s t-test for continuous variables and Fisher’s exact test for discrete variables.
FNCLCC, Fédération Nationale des Centers de Lutte Contre le Cancer.