Effects of Tumor Necrosis Factor-β (TNF-β) 252A>G Polymorphism on the Development of Migraine: A Meta-Analysis
Figure 3
Begg's funnel plot for TNF-β 252A>G polymorphism.
Log OR is plotted versus standard error of Log OR for each included study. Each circle dot represents a separate study for the indicated association between TNF-β 252A>G polymorphism and migraine risk under GG vs. AA model.