Correlation of matrix metalloproteinase suppressor genes RECK, VEGF, and CD105 with angiogenesis and biological behavior in esophageal squamous cell carcinoma

Table 2 Correlation of RECK and VEGF expression with clinical and biological behavior of ESCC

	n	RECK			χ2	P	VEGF			χ2	P
		-	+	Positive ratio (%)			-	+	Positive ratio (%)
Histology grading
I	15	1	14	93.3			8	7	46.7
II	25	11	14	56	10.422	0.005	7	18	72.0	4.014	0.134
III	22	13	9	40.9			5	17	77.3
Invasion depth
Superficial muscularis	7	0	7	100			6	1	14.3
Deep muscularis	55	25	30	54.5	8.550	0.021	14	41	74.5	10.319	0.001
Lymph metastasis
N	42	13	29	69	4.751	0.029	18	24	57.1	6.693	0.010
Y	20	12	8	40			2	18	90.0