Expression of natriuretic peptide receptor-A in esophageal squamous cell carcinomas and the relationship with tumor invasion and migration

Table 2 Relationship of natriuretic peptide receptor-A (NPRA) expression with pathological parameters of cancer

Clinical parameters	N	NPRA (%)		χ ²	P value
Clinical parameters	N	High	Low	χ ²	P value
Age				0.007	0.933
<60	16	12	4
≥60	29	20	9
Gender				0.234	0.629
Male	35	26	9
Female	10	6	4
Lymphatic metastasis				0.265	0.267
Yes	20	15	5
No	25	17	8
Histologic differentiation				17.902	0.000^a
G1	14	4(28.6)	10(71.4)
G2 + G3	31	28(90.3)	3(9.7)
TNM Stages				4.881	0.027^a
I	15	7(46.7)	8(53.3)
II + III	30	25(83.3)	5(16.7)
Location				0.585	0.747
Proximal	10	7	3
Middle	21	16	5
Distal	14	9	5

ISSN: 1477-7819