Table 3.

Multivariate analysis of factors prognostic of survival in all patients

Variables	B	SE	Wald	P	RR	95% CI
Tumor size	0.133	0.266	0.251	0.616	1.143	0.678–1.925
Serosal invasion	0.614	0.304	4.094	0.043	1.848	1.019–3.350
Lymph node metastasis	0.577	0.254	5.170	0.023	1.780	1.083–2.927
Tumor location	−0.507	0.205	6.093	0.014	0.602	0.403–0.901

*Analysis of variance. P < 0.05 is significant.