Table 1.

Statistical power with different prevalence ratios in a two-subpopulation model without adjustment for type I error

Allele frequencya	Genetic divergenceb	Power with different ratio of prevalencec
		0.02/0.06	0.03/0.05	0.04/0.04	0.05/0.03	0.06/0.02
0.1	0	0.263	0.263	0.263	0.263	0.263
	0.01	0.05	0.103	0.258	0.486	0.714
	0.05	0.438	0.055	0.239	0.742	0.973
0.5	0	0.564	0.564	0.564	0.564	0.564
	0.01	0.156	0.331	0.556	0.765	0.904
	0.05	0.088	0.111	0.523	0.913	0.996
0.9	0	0.232	0.232	0.232	0.232	0.232
	0.01	0.053	0.105	0.229	0.422	0.643
	0.05	0.191	0.05	0.216	0.676	0.964

^aRR of the allele is 1.2 in each of the two subpopulations.

^bThree different divergence levels were given in Fst.

^cThe ratios of prevalence of subpopulations A and B are shown at the head of each data column.