Table 4.

Univariate analysis of patients with perioperative blood transfusion

	n	5-year survival rate (%)	P value
Gender			0.838
Male	210	41
Female	88	39
Age (yr)			0.411
≤ 60	119	43
>60	179	38
Tumor size (cm)			0.103
≤ 5	148	44
>5	150	36
Tumor location			0.035
Upper third	116	35
Middle third	68	35
Lower third	95	51
Two-third or more	19	32
TNM stage			< 0.001
Stage I	37	89
Stage II	84	57
Stage III	177	22
Type of Gastrectomy			0.060
Subtotal	221	42
Total	77	34
Operation time (min)			0.057
< 180	168	45
≥ 180	130	34
Albumin level at admission (g/dl)			0.245
< 3.5	94	35
≥ 3.5	204	42
Hemoglobin level at admission (g/dl)			0.655
< 12	211	41
≥ 12	87	38
Frequency of blood transfusion			0.434
< 2	169	42
≥ 2	129	37
Amount of blood transfusion (unit)			0.287
< 4	134	43
≥ 4	164	38

TNM Tumor Node Metastasis, n number of patients, P value obtained by chi-squares tests or Fisher’s exact test, min minute