Figure 4 : Quantile-Quantile plot of the GWAS results.

From: T2DM GWAS in the Lebanese population confirms the role of TCF7L2 and CDKAL1 in disease susceptibility

Figure 4

Plot compares observed −log10 p values of the tested SNPs on the vertical axis to expected −log10 p values under the null hypothesis on the horizontal axis. The genomic control ratio was 1.073, indicating the lack of strong effect of systematic error such as population stratification.