Variables | RT group (n, %) | CT group (n, %) | χ2 | p value | ||||
Preoperative CT |
|
|
|
|
|
| ||
| No | 19 | 63.3% | 38 | 52.1% | 2.48 | 0.116 | |
| Yes | 11 | 36.7% | 35 | 47.9% |
|
| |
Age |
|
|
|
|
|
| ||
| <40 years | 13 | 43.3% | 21 | 28.8% | 3.67 | 0.055 | |
| ≥40 years | 17 | 56.7% | 52 | 71.2% |
|
| |
Stage |
|
|
|
|
|
| ||
| IB1 | 13 | 43.3% | 26 | 35.6% | 3.60 | 0.308 | |
| IB2 | 7 | 23.3% | 26 | 35.6% |
|
| |
| IIA | 2 | 6.7% | 9 | 12.3% |
|
| |
| IIB | 8 | 26.7% | 12 | 16.4% |
|
| |
Number of risk factors |
|
|
|
|
|
| ||
| 1 | 23 | 76.7% | 62 | 84.9% | 2.40 | 0.302 | |
| 2 | 6 | 20.0% | 9 | 12.3% |
|
| |
| ≥3 | 1 | 3.3% | 2 | 2.7% |
|
| |
Differentiation |
|
|
|
|
|
| ||
| Well | 3 | 10.0% | 8 | 11.0% | 2.81 | 0.246 | |
| Intermediate | 14 | 46.7% | 42 | 57.5% |
|
| |
| Poor | 13 | 43.3% | 23 | 31.5% |
|
| |
Cell type |
|
|
|
|
|
| ||
| Squamous | 29 | 96.7% | 59 | 80.8% | 13.44 | 0.02 | |
| Glandular | 1 | 3.3% | 11 | 15.1% |
|
| |
| Others | 0 | 0.0% | 3 | 4.1% |
|
| |
Tumor size |
|
|
|
|
|
| ||
| ≤4cm | 18 | 60.0% | 37 | 50.7% | 0.16 | 0.563 | |
| >4cm | 12 | 40.0% | 36 | 49.3% |
|
| |
DSI |
|
|
|
|
|
| ||
| Inner half | 13 | 43% | 31 | 42% | 0.02 | 0.886 | |
| Outer half | 17 | 57% | 42 | 58% |
|
| |
LVSI |
|
|
|
|
|
| ||
| No | 23 | 76.7% | 65 | 89.0% | 5.10 | 0.024 | |
| Yes | 7 | 23.3% | 8 | 11.0% |
|
| |