Skip to main content
. Author manuscript; available in PMC: 2011 May 31.
Published in final edited form as: J R Stat Soc Ser C Appl Stat. 2009 Sep;58(4):505–524. doi: 10.1111/j.1467-9876.2009.00663.x

Table 6.

Simulation results. Data generated under three-class model with non-zero mean for latent variable in each class

Class 1
Parameter True Value Mean (SD) Average Bias Coverage
Pr(Ci = k) 0.50 0.49 (0.06) −0.009 92
α1 7.0 6.97 (0.11) −0.031 95
α2 6.5 6.51 (0.19) 0.013 95
λ1 0.8 0.81 (0.12) 0.010 96
λ2 0.9 0.88 (0.09) −0.020 93
γ1 −0.10 −0.099 (0.013) 0.0009 97
γ2 0.002 0.002 (0.0004) −0.000038 97

Class 2
Parameter True Value Mean (SD) Average Bias Coverage

Pr(Ci = k) 0.33 0.33 (0.029) 0.001 96
α1 6.0 6.02 (0.15) 0.021 92
α2 6.0 6.00 (0.15) 0.004 96
λ1 1.2 1.21 (0.05) 0.0077 97
λ2 1.2 1.21 (0.05) 0.0057 96
γ1 −0.25 −0.25 (0.016) 0.0029 95
γ2 0.0034 0.0033 (0.00047) −0.00007 98

Class 3
Parameter True Value Mean (SD) Average Bias Coverage

Pr(Ci = k) 0.17 0.17 (0.055) 0.0056 96
α1 6.5 6.47 (0.25) −0.035 96
α2 7.5 7.47 (0.17) −0.028 94
λ1 1.60 1.59 (0.16) −0.012 88
λ2 0.30 0.31 (0.095) 0.011 94
γ1 −0.15 −0.15 (0.021) 0.0046 95
γ2 0.0032 0.0031 (0.0006) −0.00014 96

Variance Parameters
Parameter True Value Mean (SD) Average Bias Coverage

Ψa 0.20 0.21 (0.047) 0.014 98
τ12
0.20 0.21 (0.041) 0.011 97
τ22
0.20 0.21 (0.038) 0.008 96
σ12
0.30 0.30 (0.034) 0.0016 97
σ22
0.30 0.30 (0.029) 0.0017 96