Table 4.

Power Simulation results for non-Normal outcomes^c for 3 groups, 3 outcomes, and varying effect sizes^c

Δ1, Δ2	Effect size	standard MKW test (Deleting all missing data)	extended MKW test (Partially observed data)		standard MKW test in original data (with no missing)
			unweighted a	weighted b
2 2	0.13	0.44	0.48	0.52	0.97
2 2.5	0.18	0.57	0.61	0.63	0.99
2.5 2.5	0.18	0.65	0.69	0.73	0.99
1 3	0.24	0.48	0.50	0.56	0.99
2 3	0.24	0.65	0.69	0.73	0.997
2.5 3	0.24	0.70	0.78	0.80	1
3 3	0.23	0.80	0.85	0.87	1

^at₁ = 1/7, l = 1,…,7.

^bt₁ = 0.3, t₁ = 0.1, l = 2,…,7.

^cX ~ BIN(5,0.5). Group 1, Y₁₁|X ~ POI(1 + X), Y₁₂|X ~ POI(2 + X), Y₁₃|X ~ POI(3 + X). Group 2, Y₂₁|X ~ POI(1 + X), Y₂₂|X ~ POI(2 + X + Δ₁), Y₂₃|X ~ POI(3 + X). Group 3, Y₃₁|X ~ POI(1 + X), Y₃₂|X ~ POI(2 + X), Y₃₃|X ~ POI(3 + X + Δ₂).

30% of cases are simulated with all three outcomes observed (M1). Each of 10% of cases are simulated with two outcome observed and one outcome missing (M2, M3 and M4), and each of 10% of cases are simulated with one outcome observed and two outcomes missing (M5, M6 and M7).