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Table 1
Expression differences and clinical features of ABCG2 and V-ATPase in pathological grading and TNM staging of esophageal squamous cell carcinoma
Group		Cases	Expression of ABCG2					Expression of V-ATPase
Group		Cases	-	+	++	Positive rate (%)	Statistical value	-	+	++	Positive rate (%)	Statistical value
Sex	Male	253	14	25	14	54.72	u = 188.5.0 P = 0.007	12	31	10	77.36	u = 164.0 P = 0.001
Sex	Female	13	8	5	0	38.46	u = 188.5.0 P = 0.007	9	4	0	30.77	u = 164.0 P = 0.001
Age	≤60	28	8	10	10	71.43	u = 408.0 P = 0.083	7	15	6	75.00	u = 439.0 P = 0.181
Age	>60	38	14	20	4	63.16	u = 408.0 P = 0.083	14	20	4	63.16	u = 439.0 P = 0.181
pathological grading	I	15	13	0	2	13.33	P = 0.000	11	2	2	26.67	P = 0.003
	α	24	6	17	1	75.00		6	17	1	75.00
	β	27	3	13	11	88.89		4	16	7	85.19
	Total	66	22	30	14	66.67		21	35	10	68.18
TNM staging	αa	27	18	9	0	33.33	P = 0.000	17	10	0	39.26	P = 0.000
	αb	22	2	14	6	90.90		2	16	4	90.90
	β	17	2	7	8	88.23		2	9	6	87.50
	Total	66	22	29	14	66.67		21	35	10	68.18
Lymphatic metastasis	Yes	39	5	20	14	87.18	u = 192.5 P = 0.000	5	24	10	87.18	u = 227.0 P = 0.000
	No	27	17	10	0	37.04	u = 192.5 P = 0.000	16	11	0	40.74	u = 227.0 P = 0.000

Huang et al. Diagnostic Pathology 2012 7:180 doi:10.1186/1746-1596-7-180

Table 1