Fig. 7
From: The clinical significance of snail protein expression in gastric cancer: a meta-analysis
Meta-analysis for the relationship between snail expression and invasion depth. Seven studies analyzed the relationship between snail expression and invasion depth. The result showed that I2 value was 0 % and less than 50 %; thus, we chose fixed-effect Mantel-Haenszel model for further analysis. The overall effect was Z = 6.28, OR = 0.18, 95 % CI = (0.11, 0.31), and P < 0.001