Relationship between the expression of iNOS, VEGF, tumor angiogenesis and gastric cancer

Table 3 The relationship between the expressions of iNOS and VEGF and the prognosis of gastric carcinoma

	n	survival period		rate of five-year surviva (%)
		< 5 years	> 5 years
iNOS expession
Positive	27	22	5	18.52a
Negative	19	10	9	47.37
VEGF expession
Positive	35	30	5	14.29b
Negative	11	5	6	54.55

^aP < 0.05, (χ² = 4.3842), vs the iNOS-negative gastric cancer patients;

^bP < 0.05, (χ² = 5.4073, vs the VEGF-negative gastric cancer patients.