Table 1. The Expression of UPK1A and the Clinicopathologic Characteristics of Patients with Gastric Cancer.

Characteristics	number	UPK1A Expression (%)
		Low	High	χ2	p Value
Gender				0.499	0.48
Male	301	155	146
Female	144	69	75
Location				5.483	0.14
Fundus of stomach	181	81	100
Proximal	67	36	31
Distant	173	91	82
Total	24	16	8
Histological grade				7.598	0.022a
Well differentiated (G1)	285	151	134
Moderately differentiated (G2)	73	26	47
Poorly differentiated (G3)	87	47	40
Radical resection				0.518	0.472
Yes	375	186	189
No	70	38	32
Tumor emboli in vasculature				1.497	0.221
No	401	198	203
Yes	44	26	18
Tumor invasion (T)				5.285	0.259
T1	33	11	22
T2	42	20	22
T3	82	40	42
T4a	239	125	114
T4b	49	28	21
Nodal status (N)				19.104	<0.001a
N0	122	43	79
N1	86	41	45
N2	103	58	45
N3	134	82	52
Metastasis status (M)				0.008	0.928
M1	390	196	194
M2	55	28	27
TNM staging 7th ed				11.96	0.008a
Stage I	46	15	31
Stage II	104	45	59
Stage III	239	136	103
Stage IV	56	28	28

pN, pathological node; pT, pathological tumor; pTNM, pathological tumor/node/metastasis; UPK1A, Uroplakin 1A.

^aStatistically significant (p<0.05).