Table 1 Statistical analysis of clinical preference of sample grouping
Covariates | Type | Total | Train | Test | P value |
|---|---|---|---|---|---|
age |  <  = 65 | 90(52.63%) | 48(55.17%) | 42(50%) | 0.600 |
 > 65 | 81(47.37%) | 39(44.83%) | 42(50%) | ||
gender | FEMALE | 78(45.61%) | 43(49.43%) | 35(41.67%) | 0.387 |
MALE | 93(54.39%) | 44(50.57%) | 49(58.33%) | ||
grade | G1-2 | 120(70.18%) | 61(70.11%) | 59(70.24%) | 1.000 |
G3-4 | 49(28.65%) | 25(28.74%) | 24(28.57%) | ||
unknow | 2(1.17%) | 1(1.15%) | 1(1.19%) | ||
stage | Stage I-II | 161(94.15%) | 80(91.95%) | 81(96.43%) | 1.000 |
Stage III-IV | 7(4.09%) | 4(4.6%) | 3(3.57%) | ||
unknow | 3(1.75%) | 3(3.45%) | 0(0%) | ||
T | T1-2 | 28(16.37%) | 12(13.79%) | 16(19.05%) | 0.513 |
T3-4 | 141(82.46%) | 73(83.91%) | 68(80.95%) | ||
unknow | 2(1.17%) | 2(2.3%) | 0(0%) | ||
M | M0 | 77(45.03%) | 41(47.13%) | 36(42.86%) | 0.736 |
M1 | 4(2.34%) | 3(3.45%) | 1(1.19%) | ||
unknow | 90(52.63%) | 43(49.43%) | 47(55.95%) | ||
N | N0 | 47(27.49%) | 21(24.14%) | 26(30.95%) | 0.326 |
N1 | 119(69.59%) | 65(74.71%) | 54(64.29%) | ||
unknow | 5(2.92%) | 1(1.15%) | 4(4.76%) |