Table 1.
Clinical characteristics of training group and validation group for overall survival analysis
| Characteristic | Overall | Training group | Verification group | P |
|---|---|---|---|---|
| 3142 | 2202 | 940 | ||
| Marital status (%) | ||||
| Married | 1674 (53.3) | 1152 (52.3) | 522 (55.5) | 0.23 |
| Separated | 734 (23.4) | 521 (23.7) | 213 (22.7) | |
| Single | 734 (23.4) | 529 (24.0) | 205 (21.8) | |
| Age (%) | ||||
| < 65 | 2009 (63.9) | 1415 (64.3) | 594 (63.2) | 0.16 |
| 65–75 | 803 (25.6) | 545 (24.8) | 258 (27.4) | |
| > 75 | 330 (10.5) | 242 (11.0) | 88 (9.4) | |
| Sex (%) | ||||
| Female | 762 (24.3) | 547 (24.8) | 215 (22.9) | 0.26 |
| Male | 2380 (75.7) | 1655 (75.2) | 725 (77.1) | |
| Race (%) | ||||
| Other | 694 (22.1) | 494 (22.4) | 200 (21.3) | 0.68 |
| White | 2070 (65.9) | 1440 (65.4) | 630 (67.0) | |
| Black | 378 (12.0) | 268 (12.2) | 110 (11.7) | |
| Histological grade (%) | ||||
| Well differentiated | 455 (14.5) | 311 (14.1) | 144 (15.3) | 0.27 |
| Moderately differentiated | 541 (17.2) | 370 (16.8) | 171 (18.2) | |
| Poorly differentiated | 133 (4.2) | 103 (4.7) | 30 (3.2) | |
| Undifferentiated | 5 (0.2) | 3 (0.1) | 2 (0.2) | |
| Unknown | 2008 (63.9) | 1415 (64.3) | 593 (63.1) | |
| T (%) | ||||
| T1a | 450 (14.3) | 316 (14.4) | 134 (14.3) | 0.24 |
| T1b | 1631 (51.9) | 1162 (52.8) | 469 (49.9) | |
| T2 | 891 (28.4) | 601 (27.3) | 290 (30.9) | |
| T3 | 105 (3.3) | 73 (3.3) | 32 (3.4) | |
| T4 | 65 (2.1) | 50 (2.3) | 15 (1.6) | |
| M (%) | ||||
| M0 | 3105 (98.8) | 2174 (98.7) | 931 (99.0) | 0.59 |
| M1 | 37 (1.2) | 28 (1.3) | 9 (1.0) | |
| N (%) | ||||
| N0 | 3092 (98.4) | 2173 (98.7) | 919 (97.8) | 0.08 |
| N1 | 50 (1.6) | 29 (1.3) | 21 (2.2) | |
| Radiation therapy (%) | ||||
| Unradiation | 3053 (97.2) | 2137 (97.0) | 916 (97.4) | 0.62 |
| Radiation | 89 (2.8) | 65 (3.0) | 24 (2.6) | |
| Chemotherapy (%) | ||||
| Unchemotherapy | 2129 (67.8) | 1504 (68.3) | 625 (66.5) | 0.34 |
| Chemotherapy | 1013 (32.2) | 698 (31.7) | 315 (33.5) | |
| Tumor size (%) | ||||
| 0-28 mm | 1581 (50.3) | 1089 (49.5) | 492 (52.3) | 0.28 |
| 21-35 mm | 685 (21.8) | 483 (21.9) | 202 (21.5) | |
| > 35 mm | 876 (27.9) | 630 (28.6) | 246 (26.2) | |
| AFP (%) | ||||
| Nomal-afp | 998 (31.8) | 711 (32.3) | 287 (30.5) | 0.35 |
| Up-afp | 2144 (68.2) | 1491 (67.7) | 653 (69.5) | |
| Fibersis (%) | ||||
| Non-fibersis | 171 (5.4) | 126 (5.7) | 45 (4.8) | 0.53 |
| Fibersis | 1097 (34.9) | 762 (34.6) | 335 (35.6) | |
| Unknown | 1874 (59.6) | 1314 (59.7) | 560 (59.6) | |
| Survival months (median [IQR]) | 27.00 [15.00, 49.00] | 28.00 [16.00, 50.00] | 27.00 [15.00, 48.00] | 0.30 |