Table 2.
Univariate analysis of patients using Kaplan Meier method
| Factor | Cases | 5-Year survival | 95% CI | P-value |
|---|---|---|---|---|
| ALL | 362 | 27.6 | 20.0 (16.893-23.107) | ---- |
| Age | 0.834 | |||
| < 60 | 150 | 27.3 | 21.0 (16.336-25.664) | |
| ≥ 60 | 212 | 27.8 | 19.0 (15.159-22.841) | |
| Sex | 0.026 | |||
| Male | 267 | 24.6 | 18.0 (14.681-21.319) | |
| Female | 95 | 36.2 | 26.0 (18.876-33.124) | |
| Blood type | 0.855 | |||
| O | 103 | 28.2 | 19.0 (11.767-26.233) | |
| A | 107 | 26.2 | 20.0 (14.544-25.456) | |
| B | 109 | 26.1 | 20.0 (16.182-23.818) | |
| AB | 33 | 36.4 | 21.0 (6.370-35.630) | |
| Tumor site | 0.042 | |||
| Upper | 28 | 10.7 | 11.0 (1.925-20.075) | |
| Middle | 234 | 29.9 | 20.0 (15.964-24.036) | |
| Lower | 100 | 27.0 | 19.0 (13.383-24.717) | |
| Surgical approach | 0.011 | |||
| Left thoracic | 239 | 30.1 | 22.0 (17.131-26.869) | |
| Ivor-Lewis | 55 | 27.8 | 21.0 (16.896-25.104) | |
| Tri-incisional | 68 | 17.6 | 15.0 (8.942-21.058) | |
| Tumor Length | < 0.001 | |||
| ≤ 4.0 cm | 188 | 36.7 | 26.0 (19.841-32.159) | |
| > 4.0 cm | 174 | 17.8 | 13.0 (10.063-15.937) | |
| T stage | < 0.001 | |||
| T1 | 7 | 85.7 | N/A | |
| T2 | 57 | 45.6 | 42.0 (N/A) | |
| T3 | 273 | 23.8 | 19.0 (15.964-22.036) | |
| T4 | 25 | 12.0 | 10.0 (7.552-12.448) | |
| N stage | < 0.001 | |||
| N0 (0) | 285 | 32.6 | 24.0 (18.988-29.012) | |
| N1 (1-2) | 51 | 7.8 | 12.0 (8.119-15.881) | |
| N2 (3-6) | 18 | 16.7 | 15.0 (10.842-19.158) | |
| N3 (≥ 7) | 8 | 0 | 4.0 (0.0-8.158) | |
| Grade | < 0.001 | |||
| Well differentiated | 42 | 38.1 | 18.0 (0.0-38.112) | |
| Moderately differentiated | 268 | 29.1 | 22.0 (18.794-25.206) | |
| Poorly differentiated | 52 | 11.5 | 11.0 (7.974-14.026) | |
| Venous invasion | 0.590 | |||
| No | 360 | 27.8 | 20.0 (16.747-23.253) | |
| Yes | 2 | 0 | 17.0 (N/A) | |
| Adjuvant therapy | 0.932 | |||
| No | 249 | 30.1 | 19.0 (15.512-22.488) | |
| Yes | 113 | 22.1 | 21.0 (17.094-24.906) |