Effect of perioperative blood transfusion on prognosis of patients with gastric cancer: a retrospective analysis of a single center database

Table 5 Multivariate analysis of patients by Cox model

Variable	Wald	P value	RR	95% CI
Gender	0.419	0.518	1.056	0.895–1.245
Age	7.192	0.007	1.230	1.057–1.431
Tumor location	9.187	0.002	0.879	0.808–0.955
TNM stage	161.018	< 0.001	3.151	2.639–3.762
Type of gastrectomy	12.311	< 0.001	1.403	1.161–1.696
Perioperative blood transfusion	5.385	0.020	0.799	0.661–0.966

TNM Tumor Node Metastasis, P value obtained by chi-squares tests or Fisher’s exact test, RR relative risk, CI confidence interval

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