Table 1.

Correlation between clinical parameters and B7-H4 expression

Clinical parameters	Cases	B7-H4 Expression
		Low		High		P value
		n	%	n	%
Gender
Male	80	38	47.5	42	52.5	0.0288
Female	32	8	25.0	24	75.0
Age (years)
<60	68	27	39.7	41	60.3	0.7150
≥60	44	19	43.2	25	56.8
Tumor size (cm)
≤4	43	20	46.5	23	53.5	0.3556
>4	69	26	37.7	43	62.3
Tumor (T) statusa
pT1	13	9	69.2	4	30.8	0.0871b
pT2	50	20	40.0	30	60.0
pT3	38	13	34.2	25	65.8
pT4	11	4	36.4	7	63.6
Nodal (N) statusc
N0	61	30	49.2	31	50.8	0.0564
N1	51	16	31.4	35	68.6
Distant metastasis (M)d
M0	96	43	44.8	53	55.2	0.0500
M1	16	3	18.8	13	81.2
TNM stage
I	13	9	69.2	4	30.8	0.0258 b
II	63	25	39.7	38	60.3
III	20	9	45.0	11	55.0
IV	16	3	18.8	13	81.2
Total	112

Values in bold signify P < 0.05

^aTumor status is classified as follows: pT₁ invasion of lamina propria or submucosa, pT₂ invasion of muscularis propria, pT₃ invasion of adventitia, and pT₄ invasion of adjacent structures

^bChi-square test for trend

^cNodal status is classified as follows: N₀ no regional lymph-node metastasis, N₁ regional lymph-node metastasis

^dDistant metastasis is classified as follows: M₀ no distant metastasis, M₁ metastasis to cervical nodes, celiac nodes, and other distant metastases