Table 4.
Clinical characteristic of patients in training set and validation set.
| Characteristics | Total N = No. (%) | Training Set N = No. (%) | Validation Set N = No. (%) | P-value |
|---|---|---|---|---|
| PRIMARY ORGAN | 0.351 | |||
| bladder | 40 (21.3) | 31 (24.8) | 9 (14.3) | |
| Kidney | 49 (26.1) | 28 (22.4) | 21 (33.3) | |
| Other | 13 (6.9) | 9 (7.2) | 4 (6.3) | |
| Paratesticular | 56 (29.8) | 36 (28.8) | 20 (31.7) | |
| Prostate | 30 (16.0) | 21 (16.8) | 9 (14.3) | |
| GENDER | 0.295 | |||
| Female | 46 (24.5) | 34 (27.2) | 12 (19.0) | |
| Male | 142 (75.5) | 91 (72.8) | 51 (81.0) | |
| AGE | 0.842 | |||
| >50 years | 75 (39.9) | 51 (40.8) | 24 (38.1) | |
| ≤50 years | 113 (60.1) | 74 (59.2) | 39 (61.9) | |
| PRESENTING SYMPTOMS | 0.283 | |||
| Asymptomatic | 9 (4.8) | 4 (3.2) | 5 (7.9) | |
| Symptomatic | 179 (95.2) | 121 (96.8) | 58 (92.1) | |
| SYMPTOMATIC DURATION | 0.906 | |||
| >1 month | 116 (61.7) | 78 (62.4) | 38 (60.3) | |
| ≤1 month | 72 (38.3) | 47 (37.6) | 25 (39.7) | |
| TUMOR SIZE | 0.287 | |||
| >5 cm | 150 (79.8) | 103 (82.4) | 47 (74.6) | |
| ≤5 cm | 38 (20.2) | 22 (17.6) | 16 (25.4) | |
| HISTOLOGICAL SUBTYPE | 0.881 | |||
| Liposarcoma | 38 (20.2) | 27 (21.6) | 11 (17.5) | |
| Leiomyosarcoma | 77 (41.0) | 51 (40.8) | 26 (41.3) | |
| Other | 37 (19.7) | 23 (18.4) | 14 (22.2) | |
| Rhabdomyosarcoma | 36 (19.1) | 24 (19.2) | 12 (19.0) | |
| METASTASIS_AT_ENTRY | 0.836 | |||
| no | 140 (74.5) | 92 (73.6) | 48 (76.2) | |
| yes | 48 (25.5) | 33 (26.4) | 15 (23.8) | |
| GRADE | 0.314 | |||
| high | 152 (80.9) | 98 (78.4) | 54 (85.7) | |
| low | 36 (19.1) | 27 (21.6) | 9 (14.3) | |
| SURGERY_STATUS | 0.585 | |||
| Surgery and margin negative | 106 (63.5) | 69 (61.1) | 37 (68.5) | |
| No Surgery | 33 (19.8) | 23 (20.4) | 10 (18.5) | |
| Surgery and margin positive | 28 (16.8) | 21 (18.6) | 7 (13.0) | |
| CHEMOTHERAPY | 0.472 | |||
| no | 51 (28.3) | 36 (30.5) | 15 (24.2) | |
| yes | 129 (71.7) | 82 (69.5) | 47 (75.8) | |
| RADIOTHERAPY | 0.467 | |||
| no | 114 (63.3) | 72 (61.0) | 42 (67.7) | |
| yes | 66 (36.7) | 46 (39.0) | 20 (32.3) |
Other in Primary organ included four genitourinary sites: ureter, seminal vesicles, and urethra. Other in histological subtype included Ewing′s sarcoma, primitive neuroectodermal tumor, synovial sarcoma, angiosarcoma, fibrosarcoma, malignant peripheral sheath tumor, myo-fibroblastic tumor, osteosarcoma, chondrosarcoma, and undifferentiated sarcoma.