Table 1 The clinical information in training set, test set and total set
Characteristic | Type | Total set | Test set | Training set | P value |
|---|---|---|---|---|---|
Age |  ≤  65 | 232 (62.7%) | 116 (63.04%) | 116 (62.37%) | 0.9782 |
 > 65 | 138 (37.3%) | 68 (36.96%) | 70 (37.63%) | ||
Gender | Female | 121 (32.7%) | 61 (33.15%) | 60 (32.26%) | 0.9422 |
Male | 249 (67.3%) | 123 (66.85%) | 126 (67.74%) | ||
Grade | G1–2 | 232 (62.7%) | 116 (63.04%) | 116 (62.37%) | 0.9214 |
G3–4 | 133 (35.95%) | 65 (35.33%) | 68 (36.56%) | ||
Unknown | 5 (1.35%) | 3 (1.63%) | 2 (1.08%) | ||
Stage | Stage I-II | 256 (69.19%) | 130 (70.65%) | 126 (67.74%) | 0.2024 |
Stage III-IV | 90 (24.32%) | 38 (20.65%) | 52 (27.96%) | ||
Unknown | 24 (6.49%) | 16 (8.7%) | 8 (4.3%) | ||
T | T1–2 | 274 (74.05%) | 140 (76.09%) | 134 (72.04%) | 0.2946 |
T3–4 | 93 (25.14%) | 41 (22.28%) | 52 (27.96%) | ||
Unknown | 3 (0.81%) | 3 (1.63%) | 0 (0%) | ||
M | M0 | 266 (71.89%) | 128 (69.57%) | 138 (74.19%) | 0.573 |
M1 | 4 (1.08%) | 3 (1.63%) | 1 (0.54%) | ||
Unknown | 100 (27.03%) | 53 (28.8%) | 47 (25.27%) | ||
N | N0 | 252 (68.11%) | 123 (66.85%) | 129 (69.35%) | 0.1515 |
N1–3 | 4 (1.08%) | 0 (0%) | 4 (2.15%) | ||
Unknown | 114 (30.81%) | 61 (33.15%) | 53 (28.49%) |