Table 5.

Multivariate analysis of postoperative predictive factors for achieving 5‐year survival

Factor	P‐value	OR	95.0% CI
Infiltration (0–1)
Lymphatic	0.458	0.64	0.20–20.70
Venous	0.034a	2.99	1.09–8.25
Neural	0.160	2.10	0.75–5.95
LNM (+)	0.947	0.92	0.07–12.52
UICC stageb
IA	0.116	12.33	0.54–283.60
IIA	0.475	2.07	0.28–15.35
IIB	0.474	0.46	0.28–15.35
Perioperative PVI chemotherapy	0.028a	3.06	1.09–8.25
Recurrence
Local	0.257	0.51	0.16–1.63
Liver	0.013a	0.17	0.04–0.69
Peritoneal	0.076	0.28	0.07–1.15

CI, confidence interval; LNM, lymph node metastasis; OR, odds ratio; PVI, portal vein infusion; UICC, Union for International Cancer Control.

^a P < 0.05.

^bPathological stage, UICC Classification of Malignant Tumors (seventh edition).