Table 1 Patient characteristics in the training cohort and validation cohort
|  | Training cohort(N = 1683) | Validation cohort(N = 125) | ||
|---|---|---|---|---|
N | Percent | N | Percent | |
Age | ||||
 X < 30 | 132 | 7.80 | 3 | 2.40 |
 30 ≤ X < 50 | 972 | 57.80 | 82 | 65.60 |
 50 ≤ X < 70 | 494 | 29.40 | 40 | 32.00 |
 X ≥ 70 | 85 | 5.10 | 0 | 0.00 |
Race | ||||
 White | 1334 | 79.30 | 0 | 0.00 |
 Black | 134 | 8.0 | 0 | 0.00 |
 Others | 215 | 12.80 | 125 | 100.00 |
Marital status | ||||
 Married | 834 | 49.60 | 112 | 89.60 |
 Single | 518 | 30.80 | 0 | 0.00 |
 Divorced / Separated | 238 | 14.10 | 7 | 5.60 |
 Widowed | 93 | 5.50 | 6 | 4.80 |
Histology | ||||
 Squamous cell carcinoma | 1211 | 72.00 | 99 | 79.20 |
 Adenocarcinoma | 337 | 20.00 | 25 | 20.00 |
 Adenosquamous | 135 | 8.00 | 1 | 0.80 |
Differentiation | ||||
 Well differentiation | 79 | 4.70 | 4 | 3.20 |
 Moderate differentiation | 717 | 42.60 | 93 | 74.40 |
 Poor differentiation | 887 | 52.70 | 28 | 22.40 |
Extension range | ||||
 Confined to the cervix uteri / uterus | 1036 | 61.60 | 91 | 72.80 |
 Extension beyond uterus | 647 | 38.40 | 34 | 27.20 |
Tumour size (cm) | ||||
 X < 2 | 214 | 12.70 | 6 | 4.80 |
 2 ≤ X < 4 | 623 | 37.00 | 47 | 37.60 |
 X ≥ 4 | 846 | 50.30 | 72 | 57.60 |
Radiotherapy | ||||
 Yes | 1433 | 85.10 | 92 | 73.60 |
 No | 250 | 14.90 | 33 | 26.40 |
Chemotherapy | ||||
 Yes | 1337 | 79.40 | 116 | 92.80 |
 No | 346 | 20.60 | 9 | 7.20 |
Surgery | ||||
 Preserve uterus | 341 | 20.30 | 0 | 0.00 |
 Hysterectomy | 1342 | 79.70 | 125 | 100.00 |
Survival state | ||||
 Survive | 1173 | 69.70 | 84 | 67.20 |
 Dead of other cause | 121 | 7.20 | 9 | 7.20 |
 Dead of cervical cancer | 389 | 23.10 | 32 | 25.60 |