Fig. 4
From: The clinical significance of snail protein expression in gastric cancer: a meta-analysis
Meta-analysis for the relationship between snail expression and lymph node metastasis. Eight studies analyzed the relationship between snail expression and lymph node metastasis. The results indicated that the I2 value was 74.4 % and greater than 50 %; thus, we chose random-effect model for further analysis. The overall effect was Z = 2.14, OR = 0.40, 95 % CI = (0.18, 0.93), and P < 0.001