Table 3.

 Determination of predictive factors for long‐term survival of gastric adenocarcinoma patients with curative surgical resection by multivariate analysis

Valuables	Relative risk (95% CI)	P‐values
Gastric cancer stage
Stage I	1
Stage II	0.94 (0.58–16.10)	NS
Stage III	8.75 (1.09–70.60)	0.04
Stage IV	42.60 (5.42–334.35)	<0.01
Histological staining of 15‐PGDH
Positive	1
Negative	2.81 (1.21–6.56)	0.02

15‐PGDH, 15‐hydroxyprostaglandin dehydrogenase; CI, confidence interval; COX‐2, cyclooxygenase‐2; NS, not significant.