Table 2 Univariate analysis for disease-specific survival and disease-free survival rates
n | 5-year DSS (%) | p-value | 5-year DFS (%) | p-value | |
|---|---|---|---|---|---|
Age | |||||
≤ 70 | 37 | 77.8 | 0.574 | 55.4 | 0.117 |
> 70 | 34 | 65.7 | 44.3 | ||
Sex | |||||
Male | 57 | 70.9 | 0.925 | 49..7 | 0.917 |
Female | 14 | 76.2 | 51.9 | ||
Performance status | |||||
0 | 57 | 78.8 | <0.001 | 60.7 | <0.001 |
≥ 1 | 14 | 53.8 | 0 | ||
Main tumor location | |||||
Upper thoracic | 12 | 0 | 0.205 | 64.8 | 0.186 |
Middle thoracic | 41 | 80.1 | 57.2 | ||
Lower thoracic | 18 | 74.9 | 25.5 | ||
RT field | |||||
Non-ENI | 32 | 62.3 | 0.094 | 42.0 | 0.389 |
ENI | 39 | 81.7 | 55.3 | ||
Radiation dose | |||||
≤ 50 Gy | 32 | 88.5 | 0.003 | 61.6 | 0.035 |
> 50 Gy | 39 | 55.0 | 38.0 | ||
Tumor length | |||||
≤ 5 cm | 55 | 70.5 | 0.540 | 50.9 | 0.818 |
> 5 cm | 16 | 85.2 | 50.6 | ||
Circumferential spread of tumor | |||||
≤ 0.75 | 63 | 71.2 | 0.464 | 47.7 | 0.302 |
> 0.75, ≤1 | 8 | 83.3 | 68.6 | ||
Tumor number | |||||
1 | 65 | 62.8 | 0.170 | 51.2 | 0.149 |
≥ 2 | 6 | 100 | 44.4 | ||
Depth of tumor invasion | |||||
Muscularis mucosa | 6 | 100 | 0.227 | 26.7 | 0.808 |
Submucosa | 65 | 70.7 | 51.3 | ||
Endoscopic resection | |||||
No | 26 | 53.6 | 0.005 | 33.8 | 0.014 |
Yes | 45 | 82.9 | 58.8 | ||
Chemotherapy | |||||
No | 24 | 54.5 | 0.005 | 44.1 | 0.036 |
Yes | 47 | 80.8 | 53.7 | ||