Table 4.
Multivariate analysis for prognosis
| Variable | P-value | Relative risk | 95% confidence interval |
|---|---|---|---|
| Histologic subtype | |||
| Adenocarcinoma | – | 1 | – |
| Adenosquamous carcinoma | 0.04 | 1.12 | 1.01 – 1.24 |
| Lymph node metastasis | 0.002 | 1.85 | 1.25 – 2.74 |
| Resection marginal involvement | 0.04 | 1.61 | 1.02 – 2.54 |
| Growth pattern | 0.06 | 1.44 | 0.99 – 2.09 |
| Duodenal invasion | 0.57 | 1.24 | 0.59 – 2.60 |
| Pancreatic invasion | 0.59 | 0.86 | 0.51 – 1.46 |
| Vascular invasion | 0.10 | 1.42 | 0.94 – 2.15 |
| T classification | 0.08 | 1.39 | 0.96 – 1.99 |
*
Significant at level of p<0.05.