Table 3.
Independent overall survival predictors retained by multivariate analysis
| Factor | No. of patients |
Multivariate analysis |
|||
| HR | 95% CI | P value | |||
| Celiac axis lymph node | Compared to pN0 | ||||
| Negative | 130 | ||||
| Positive | 12 | 1.76 | 0.68 | 4.57 | 0.246 |
| Number of positive nodes/case | Compared to pN0 | ||||
| LN+ ≥ 7 | 48 | 1.34 | 0.6 | 2.96 | 0.467 |
| LN+ ≥ 16 | 14 | 2.77 | 1.15 | 4.51 | 0.018 |
| Lymph node ratio | Compared to pN0 | ||||
| ≤ 0.2 | 40 | 3.8 | 1.28 | 11.26 | 0.016 |
| > 0.2 | 66 | 7.79 | 2.05 | 29.57 | 0.003 |
| Overall stage pIV | Compared to pI | ||||
| 12 | 18.43 | 2.27 | 145.62 | 0.002 | |
| Tumor differentiation poorly differentiated | Compared to well differentiated | ||||
| 70 | 1.42 | 0.79 | 2.55 | 0.243 | |
LN: Lymph node; HR: Hazards ratio; CI: Confidence interval.