Table 6.
True models | Random effects models using NLMIXED |
Bayesian hierarchical models using WinBUGS |
|||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
None | εi | μiA | μiB | εi, μiA | εi, μiB | μiA, μiB | None | εi | μiA | μiB | εi, μiA | εi, μiB | μiA, μiB | ||
None | Mean | 902 | 900 | 903 | 900 | 901 | 900 | 902 | 897 | 900 | 919 | 902 | 918 | 902 | 922 |
95% CI length* | 83 | 89 | 98 | 89 | 96 | 89 | 97 | 79 | 84 | 105 | 83 | 101 | 81 | 101 | |
95% CICP* | 961 | 968 | 975 | 964 | 977 | 969 | 976 | 938 | 949 | 944 | 951 | 942 | 946 | 920 | |
εi | Mean | 902 | 900 | 897 | 896 | 902 | 900 | 890 | 897 | 900 | 902 | 897 | 916 | 902 | 896 |
95% CI length* | 85 | 86 | 123 | 92 | 96 | 87 | 129 | 80 | 81 | 126 | 86 | 103 | 79 | 130 | |
95% CICP* | 961 | 966 | 972 | 956 | 977 | 968 | 956 | 941 | 958 | 981 | 946 | 950 | 945 | 977 | |
μiA | Mean | 893 | 891 | 900 | 891 | 898 | 891 | 899 | 888 | 892 | 911 | 894 | 911 | 895 | 915 |
95% CI length* | 85 | 91 | 111 | 91 | 111 | 91 | 111 | 81 | 86 | 112 | 85 | 108 | 83 | 108 | |
95% CICP* | 864 | 879 | 949 | 873 | 942 | 876 | 950 | 829 | 879 | 959 | 890 | 951 | 875 | 948 | |
εi, μiA | Mean | 893 | 892 | 890 | 887 | 899 | 892 | 882 | 889 | 893 | 894 | 888 | 909 | 895 | 887 |
95% CI length* | 85 | 86 | 132 | 92 | 106 | 87 | 139 | 82 | 84 | 134 | 88 | 110 | 81 | 138 | |
95% CICP* | 860 | 885 | 944 | 852 | 952 | 886 | 898 | 831 | 873 | 977 | 855 | 957 | 866 | 963 |
NOTE: The numbers have been multiplied by 1,000 for presentation. The bolded cells represent the correctly chosen model.
95% CICp = 95% confience interval coverage probability 95% CICP, and 95% CI length are based on logit-normal assumption for the random effects models using NLMIXED and equal tail credible intervals for the Bayesian hierarchical models using WinBUGS.