Figure 7.

Bias assessment plot for the outcome of congenital malformations. Begg-Mazumdar: Kendall's tau = 0.33 P = 0.15. Egger: bias = 1.27 (95% CI = -0.01 to 2.56) P = 0.05. Horbold-Egger: bias = 2.19 (95% CI = 0.53 to 3.84) P = 0.03.