Skip to main content
. 2013 Sep 16;8(9):e73671. doi: 10.1371/journal.pone.0073671

Figure 4. Funnel plot analysis to detect publication bias for −607 C>A.

Figure 4

A: funnel plot of all 23 eligible studies on −607 C>A, Egger’s test p = 0.009. B: funnel plot of 22 studies on −607 C>A (Qi’s study was excluded), Egger’s test p = 0.103. The circles represent the weight of individual study.