Fig. 4From: Clinical significance of CDH13 promoter methylation as a biomarker for bladder cancer: a meta-analysisForest plot of the association between CDH13 methylation and tumor grade from a fixed-effects model, including 4 studies with 169 high-grade patients and 284 low-grade patients, OR = 2.22, 95 % CI = 1.72–6.80, P < 0.001Back to article page