Research Article
[Retracted] Nomogram to Predict Overall and Cancer-Specific Survival in Patients with Synovial Sarcoma in the Extremities: A Population-Based Study
Table 1
Patient demographic characteristics.
| | | Training cohort N (%) | Validation cohort N (%) | Total N (%) |
| | n (%) | 160 | 67 | 227 |
| | Age | | 0–23 | 49 (30.6) | 16 (23.9) | 65 (28.6) | | 24–40 | 55 (34.4) | 28 (41.8) | 83 (36.6) | | >40 | 56 (35.0) | 23 (34.3) | 79 (34.8) |
| | Sex | | Male | 75 (46.9) | 36 (53.7) | 111 (48.9) | | Female | 85 (53.1) | 31 (46.3) | 116 (51.1) |
| | Pathological type | | Spindle cell | 100 (62.5) | 51 (76.1) | 151(66.5) | | Epithelioid cell | 1 (0.6) | 1 (1.5) | 2 (0.9) | | Biphasic | 59 (36.9) | 15 (22.4) | 74 (32.6) |
| | Primary site | | Upper | 39 (24.4) | 13 (19.4) | 52 (22.9) | | Lower | 121 (75.6) | 54 (80.6) | 175 (77.1) |
| | Tumor size (mm) | | 6–66 | 82 (51.2) | 31 (46.3) | 113 (49.8) | | 67–145 | 56 (35.0) | 25 (37.3) | 81 (35.7) | | >145 | 22 (13.8) | 11 (16.4) | 33 (14.5) |
| | Stage T | | T1a | 19 (11.9) | 6 (9.0) | 25 (11.0) | | T1b | 44 (27.5) | 17 (25.4) | 61 (26.9) | | T2a | 11 (6.9) | 1 (1.5) | 12 (5.3) | | T2b | 77 (48.1) | 39 (58.1) | 116 (51.1) | | TX | 9 (5.6) | 4 (6.0) | 13 (5.7) |
| | Stage N | | N0 | 152 (95.0) | 64 (95.5) | 216 (95.2) | | N1 | 7 (4.4) | 3 (4.5) | 10 (4.4) | | NX | 1 (0.6) | 0 | 1 (0.4) |
| | Stage M | | M0 | 145 (90.6) | 53 (79.1) | 198 (87.2) | | M1 | 15 (9.4) | 14 (20.9) | 29 (12.8) |
| | Radiation | | Yes | 114（71.2） | 40 (59.7) | 154 (67.8) | | No | 46 (28.8) | 27 (40.3) | 73 (32.2) |
| | Chemotherapy | | Yes | 83 (51.9) | 44 (65.7) | 127 (55.9) | | No | 77 (48.1) | 23 (34.3) | 100 (44.1) |
| | Surgery | | Yes | 83 (51.9) | 44 (65.7) | 215 (94.7) | | No | 77 (48.1) | 23 (34.3) | 12 (5.3) |
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