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. 2010 Sep 23;6(9):e1001130. doi: 10.1371/journal.pgen.1001130

Figure 1. Quantile-Quantile plots for 483,399 single SNP tests of association.

Figure 1

Plots depict expected versus observed −log10 P-values for 483,399 single SNP tests of association (in 931 LOAD cases and 1,104 cognitive controls, with adjustment for principal components as covariates for population substructure). Plot A includes the most-strongly associated SNPs within the APOE locus, whereas plot B excludes the three most-strongly associated SNPs for clarity.