Table 2 Clinical characteristics of training group and validation group for cancer-specific survival analysis
Characteristic | Overall | Training group | Verification group | P |
|---|---|---|---|---|
2703 | 1895 | 808 | ||
Marital status (%) | ||||
 Married | 1438 (53.2) | 1020 (53.8) | 418 (51.7) | 0.423 |
 Separated | 623 (23.0) | 424 (22.4) | 199 (24.6) |  |
 Single | 642 (23.8) | 451 (23.8) | 191 (23.6) |  |
Age (%) | ||||
  < 65 | 1724 (63.8) | 1203 (63.5) | 521 (64.5) | 0.766 |
 65–75 | 711 (26.3) | 506 (26.7) | 205 (25.4) |  |
  > 75 | 268 (9.9) | 186 (9.8) | 82 (10.1) |  |
Sex (%) | ||||
 Female | 665 (24.6) | 465 (24.5) | 200 (24.8) | 0.945 |
 Male | 2038 (75.4) | 1430 (75.5) | 608 (75.2) |  |
Race (%) | ||||
 Other | 617 (22.8) | 424 (22.4) | 193 (23.9) | 0.336 |
 White | 1767 (65.4) | 1237 (65.3) | 530 (65.6) |  |
 Black | 319 (11.8) | 234 (12.3) | 85 (10.5) |  |
Histological grade (%) | ||||
 Well differentiated | 389 (14.4) | 277 (14.6) | 112 (13.9) | 0.965 |
 Moderately differentiated | 470 (17.4) | 324 (17.1) | 146 (18.1) |  |
 Poorly differentiated | 114 (4.2) | 80 (4.2) | 34 (4.2) |  |
 Undifferentiated | 4 (0.1) | 3 (0.2) | 1 (0.1) |  |
Unknown | 1726 (63.9) | 1211 (63.9) | 515 (63.7) | Â |
 T (%) | ||||
 T1a | 388 (14.4) | 266 (14.0) | 122 (15.1) | 0.896 |
 T1b | 1390 (51.4) | 976 (51.5) | 414 (51.2) |  |
 T2 | 772 (28.6) | 543 (28.7) | 229 (28.3) |  |
 T3 | 95 (3.5) | 70 (3.7) | 25 (3.1) |  |
 T4 | 58 (2.1) | 40 (2.1) | 18 (2.2) |  |
M (%) | ||||
 M0 | 2672 (98.9) | 1875 (98.9) | 797 (98.6) | 0.554 |
 M1 | 31 (1.1) | 20 (1.1) | 11 (1.4) |  |
N (%) | ||||
 N0 | 2658 (98.3) | 1865 (98.4) | 793 (98.1) | 0.731 |
 N1 | 45 (1.7) | 30 (1.6) | 15 (1.9) |  |
Radiation therapy (%) | ||||
 Unradiation | 2621 (97.0) | 1845 (97.4) | 776 (96.0) | 0.087 |
 Radiation | 82 (3.0) | 50 (2.6) | 32 (4.0) |  |
Chemotherapy (%) | ||||
 Unchemotherapy | 1811 (67.0) | 1268 (66.9) | 543 (67.2) | 0.919 |
 Chemotherapy | 892 (33.0) | 627 (33.1) | 265 (32.8) |  |
Tumor size (%) | ||||
 0-28 mm | 1377 (50.9) | 964 (50.9) | 413 (51.1) | 0.827 |
 21-35 mm | 564 (20.9) | 391 (20.6) | 173 (21.4) |  |
  > 35 mm | 762 (28.2) | 540 (28.5) | 222 (27.5) |  |
AFP(%) | ||||
 Nomal-AFP | 850 (31.4) | 603 (31.8) | 247 (30.6) | 0.551 |
 Up-AFP | 1853 (68.6) | 1292 (68.2) | 561 (69.4) |  |
Fibersis (%) | ||||
 Non-fibersis | 151 (5.6) | 107 (5.6) | 44 (5.4) | 0.723 |
 Fibersis | 953 (35.3) | 659 (34.8) | 294 (36.4) |  |
Unknown | 1599 (59.2) | 1129 (59.6) | 470 (58.2) | Â |
 Survival months (median [IQR]) | 29.00 [16.00, 50.00] | 29.00 [16.00, 50.00] | 28.00 [15.00, 50.25] | 0.55 |