. Author manuscript; available in PMC: 2009 Mar 4.

Published in final edited form as: J Nonparametr Stat. 2008;20(6):459–481. doi: 10.1080/10485250802226435

Table 3.

Simulation study: estimation of variance components for unbalanced data with 20% missing. Numbers given are (A) averages and (B) standard deviation across 1000 simulations.

Variance components: σ² = 0.25, D₁₁ = 0.563, D₂₂ = 1, D₁₂ = 0.375
n/10	CA-LME				Benchmark-LME				Unadjusted-LME

	σ²	D₁₁	D₂₂	D₁₂	σ²	D₁₁	D₂₂	D₁₂	σ²	D₁₁	D₂₂	D₁₂
(A) Mean
10	0.236	0.589	1.008	0.359	0.250	0.569	1.010	0.382	0.289	0.920	0.182	1.735
20	0.237	0.584	0.986	0.356	0.250	0.562	1.006	0.376	0.289	0.910	0.175	1.730
40	0.240	0.566	0.981	0.360	0.250	0.563	1.002	0.375	0.289	0.907	0.175	1.729
80	0.242	0.561	0.985	0.367	0.250	0.563	0.998	0.376	0.289	0.912	0.175	1.719

(B) Standard deviation
10	0.033	0.190	0.226	0.112	0.021	0.144	0.145	0.103	0.035	0.226	0.145	0.350
20	0.023	0.125	0.157	0.078	0.015	0.097	0.103	0.071	0.025	0.159	0.096	0.252
40	0.014	0.086	0.108	0.057	0.010	0.069	0.073	0.052	0.018	0.114	0.070	0.181
80	0.010	0.064	0.073	0.039	0.007	0.050	0.049	0.035	0.012	0.085	0.049	0.124