Table 1.
Baseline characteristics of all patients
| Characteristics | Cases | Percentage (%) |
|---|---|---|
| Sex | 310 | |
| Male | 174 | 56.1 |
| Female | 136 | 43.9 |
| Age at operation (years) | ||
| < 50 | 208 | 67.1 |
| ≥ 50 | 102 | 32.9 |
| Performance status | ||
| 0 | 237 | 76.5 |
| ≥ 1 | 73 | 23.5 |
| Body mass index (kg/m2) | ||
| < 18.5 | 42 | 13.5 |
| ≥ 18.5 to< 25.0 | 208 | 67.1 |
| ≥ 25.0 | 60 | 19.4 |
| Pathological types | ||
| Fibrosarcoma | 59 | 19.0 |
| liposarcoma | 37 | 11.9 |
| Undifferentiated pleomorphic sarcoma/MFH | 78 | 25.2 |
| Leiomyosarcoma | 17 | 5.5 |
| Synovial sarcoma | 40 | 12.9 |
| Rhabdomyosarcoma | 19 | 6.1 |
| Alveolar soft part sarcoma | 9 | 2.9 |
| Angiosarcoma | 8 | 2.6 |
| Malignant peripheral nerve sheath tumor | 15 | 4.8 |
| Mesenchymal chondrosarcoma | 8 | 2.6 |
| Others | 20 | 6.5 |
| Tumor size (cm) | ||
| < 5 | 143 | 46.1 |
| ≥ 5 | 167 | 53.9 |
| Tumor site | ||
| Upper extremity | 35 | 11.3 |
| Lower extremity | 82 | 26.5 |
| Thoracic/trunk/abdominal wall | 91 | 29.4 |
| Intra-abdominal | 48 | 15.5 |
| Head/neck | 48 | 15.5 |
| Others | 6 | 1.9 |
| Tumor depth | ||
| Superficial | 127 | 41.0 |
| Deep | 183 | 59.0 |
| Tumor grade | ||
| G1 | 82 | 26.5 |
| G2 | 119 | 38.4 |
| G3 | 80 | 25.8 |
| Missing | 29 | 9.4 |
| Surgical margin | ||
| R0 | 279 | 95.2 |
| R1 | 9 | 3.1 |
| R2 | 3 | 1.0 |
| Rx | 2 | 0.7 |
| AJCC stage | ||
| IA + IB | 83 | 26.8 |
| IIA + IIB | 141 | 45.5 |
| III + IV | 62 | 20.0 |
| Missing | 24 | 7.1 |
| NLR | ||
| < 2.51 | 214 | 69.0 |
| ≥ 2.51 | 96 | 31.0 |
| PLR | ||
| < 191.1 | 265 | 85.5 |
| ≥ 191.1 | 45 | 14.5 |
| FAR | ||
| < 0.0726 | 176 | 56.8 |
| ≥ 0.0726 | 124 | 43.2 |
| End-point | ||
| Alive | 212 | 68.4 |
| Dead | 98 | 31.6 |
| Recurrence | ||
| YES | 112 | 36.1 |
| NO | 198 | 63.9 |
| Metastasis | ||
| YES | 61 | 19.7 |
| NO | 249 | 80.3 |
| Adjuvant therapy | ||
| None | 257 | 82.9 |
| Chemotherapy | 14 | 4.5 |
| Radiotherapy | 16 | 5.2 |
| Combined chemoradiotherapy | 2 | 0.6 |
| Unknown | 21 | 6.8 |