Table 2. Association between expression of Twist1 or PDCD4 in gastric cancer.

			Twist1 expression
Variable		Total	0–4	6–12	P-value
PDCD4 expression
0–4		19	3(15.8%)	16(84.2%)	0.035
6–12		11	6(54.6%)	5(45.4%)

Pathology rating criteria: 1) immunohistochemistry positive expression rate: 0 points <20%, 1 points 20–40%, 2 points 40–60%, 3 points 60–80%, 4 points >80%; 2) protein color intensity: 0, no; 1 point, weak; 2 points, medium; 3 points, high. Rate for the protein expression of tissues with 2 sections. Scores were 0, 1, 2, 3, 4, 6, 8, 9 and 12. 0–4, low expression; 6–12, high expression.