Table 3.

Univariate and multivariate analysis of prognostic factors in gastric carcinoma.

Clinical factors	P value under univariate analysis	P value under multivariate analysis	Risk ratio	95% confidence interval (CI)
Age	0.42	–	–	–
Sex	0.50	–	–	–
Invasive depth	<0.01	0.25	2.44	0.52–11.44
Tumor size	<0.01	0.35	1.58	0.61–4.09
Lymph node metastasis	<0.01	0.03	5.02	1.18–21.41
Lymph tube invasion	<0.05	0.27	0.35	0.05–2.26
TNM staining	<0.05	0.17	1.62	0.81–3.24
Nrf2 expression	<0.05	0.40	1.37	0.66–2.87