# Power of the statistics for testing interaction between two unlinked loci.

(A) The power of the test statistic , the “fast-epistasis” in PLINK and logistic regression analysis for testing interaction between two unlinked loci as a function of traditional odds-ratio under a two-locus recessiverecessive disease model, where the number of individuals in both the case and control groups is 2,000, the significance level is 0.001, and the odds-ratios at two loci were . (B) The power of the test statistic , the “fast-epistasis” in PLINK and logistic regression analysis for testing interaction between two unlinked loci as a function of traditional odds-ratio under a two-locus dominantdominant disease model, where the number of individuals in both the case and control groups is 1,000, the significance level is 0.001, and the odds-ratios at two loci were . (C) The power of the test statistic , the “fast-epistasis” in PLINK and logistic regression analysis for testing interaction between two unlinked loci as a function of traditional odds-ratio under a two-locus additiveadditive disease model, where the number of individuals in both the case and control groups is 1,000, the significance level is 0.001, and the odds-ratios at two loci were .