Fig. 2

Power comparison among the six test methods under the alternative. In the simulation scenarios, 30%, 50% or 0% SNPs were randomly selected to have zero effect sizes. The PVE of the expression level explained by β was set to 0.3 (above) or 0.5 (below). A 30% SNPs having zero effect sizes; B 50% SNPs having zero effect sizes; C 0% SNPs having zero effect sizes. Here, θ = 0.4 or (and) τ = 0.04