Table 2.
Univariate and multivariate analyses of the factors related to overall survival.
|
Univariate analysis |
Multivariate analysis |
|||
|---|---|---|---|---|
| HR | P value | HR | P value | |
| LND | ||||
| No | 1 | 0.03 | 1 | 0.024 |
| Yes | 1.14 (1.01–1.28) | 1.15 (1.02–1.30) | ||
| Age (years) | ||||
| <60 | 1 | 0.01 | 1 | <0.01 |
| ≥60 | 1.16 (1.04–1.33) | 1.2 (1.06–1.36) | ||
| Sex | ||||
| Female | 1 | <0.01 | 1 | <0.01 |
| Male | 1.17 (1.04–1.32) | 1.22 (1.07–1.35) | ||
| Tumor size (cm) | ||||
| ≤5 | 1 | <0.01 | 1 | <0.01 |
| >5 | 1.33 (1.18–1.50) | 1.35 (1.08–1.37) | ||
| At least six lymph nodes dissected | (Analysis only in the LND group) | |||
| <6 | 1 | 0.26 | 1 | 0.09 |
| ≥6 | 1.11 (0.93–1.33) | 0.85 (0.71–1.02) | ||
| LNM | ||||
| Negative | 1 | <0.01 | 1 | |
| Positive | 2.80 (2.38–3.30) | 2.92 (2.47–3.45) | <0.01 | |
HR, hazard ratio; LNM, lymph node metastasis; LND, lymph node dissection.
95% confidence intervals are shown in brackets.