Resolution:
## Figure 1.
Empirical Type I error results. Two sub-populations of 500 individuals each, F_{st }= 0.01. K_{1 }and p_{1 }are the population prevalence of disease and risk allele frequency, respectively,
in sub-population 1. K_{2 }and p_{2 }are the population prevalence of disease and risk allele frequency, respectively,
in sub-population 2. The x-axis is the various methods of selecting PCs for inclusion
in the model of association and the symbols in the plot represent the phenotypic structure.
The y-axis is the proportion of logistic regression models adjusting for the selected
PCs for which the SNP p-values are significant at a significance level of 0.05.
Peloso and Lunetta |