Table 4. Cox proportional hazards multivariate model for survival outcomes.
| |
LRRFS |
DFS |
OS |
|||
|---|---|---|---|---|---|---|
| Variables | HR (95% CI) | P | HR (95% CI) | P | HR (95% CI) | P |
| ENI |
1.187 (0.399–3.531) |
0.7580 |
1.178 (0.543–2.560) |
0.6782 |
1.670 (0.470–5.931) |
0.4279 |
| Age |
– |
– |
0.542 (0.250–1.175) |
0.1208 |
– |
– |
| No. of sampled LNs |
0.468 (0.161–1.363) |
0.1638 |
0.374 (0.170–0.823) |
0.0145 |
0.336 (0.097–1.164) |
0.0853 |
| Pathologic T classification | 1.619 (0.764–3.429) | 0.2085 | 2.025 (1.171–3.503) | 0.0116 | 1.685 (0.710–4.001) | 0.2369 |
Abbreviations: CI=confidence interval; DFS=disease-free survival; ENI=elective nodal irradiation; HR=hazard ratio; LN=lymph node; LRRFS=locoregional recurrence-free survival; OS=overall survival.