Begg's funnel plots for testing publication bias in Allelic comparisons.

<p>Each point in each figure represents OR of a study plotted against the standard error (SE) its OR. Different indicators of the studies belonging to each ancestral group are used in these plots. <b>Figure 5A</b>: <i>Allele T vs. G</i> for Glu298Asp; <b>Figure 5B</b>: <i>Allele C vs. T</i> for T786-C; <b>Figure 5C</b>: <i>Allele 4a vs. 4b</i> for 4b/a.