Fig. 3From: Meta-analysis of associations of vascular endothelial growth factor protein levels and -634G/C polymorphism with systemic lupus erythematosus susceptibilityAssociation of vascular endothelial growth factor protein levels with SLE developing into LN. SLE: systemic lupus erythematosus; LN: Lupus nephritis; SD: standard deviation; Total: the total number of SLE group or control group; CI: confidence intervals; I2: test the heterogeneity among recruited studies; df: degrees of freedomBack to article page