TABLE III.

Power of the proposed test statistics for Case 2. Here p₁ = p₂ = 5 and we test for equality of the two 5 × 5 blocks Σ₁₂ and Ω₁₂. IM1, multiplicative within and between loci – no interaction; IM2, multiplicative model and no main effects; IM3, the threshold model. For this set of simulations, 1000 cases and 1000 controls were sampled for each of 1000 simulation runs. We completed 10000 permutations for each data set, and controlled the significance level at α = 0.05.

		Parameter β in the model
		0	0.1	0.5	1	2	4
IM1	δ2	0.048	0.047	0.049	0.051	0.052	0.053
	LM1	0.049	0.050	0.051	0.052	0.053	0.052
	LM2	0.048	0.049	0.051	0.052	0.051	0.052
IM2	δ2	0.049	0.072	0.134	0.225	0.821	1.000
	LM1	0.051	0.059	0.089	0.154	0.521	1.000
	LM2	0.050	0.062	0.095	0.169	0.558	1.000
IM3	δ2	0.051	0.065	0.104	0.195	0.701	1.000
	LM1	0.050	0.056	0.072	0.104	0.468	0.990
	LM2	0.050	0.057	0.080	0.119	0.468	1.000