Research Article
Longitudinal Joint Modelling of Ordinal and Overdispersed Count Outcomes: A Bridge Distribution for the Ordinal Random Intercept
Table 6
Simulation study results with 0.4 correlation between the random intercepts and Bridge distribution for the random intercept of the ordinal outcome.
| | | MSE | | MSE | | MSE | Mean | AVB | Mean | AVB | Mean | AVB |
| Count process | | | | | | | | | | | | 50 | 2.6665 | 0.0665 | 0.0054 | 2.5899 | 0.0101 | 0.0010 | 2.5623 | 0.0377 | 0.0024 | 200 | 2.6104 | 0.0104 | 0.0006 | 2.5942 | 0.0058 | 0.0005 | 2.5819 | 0.0181 | 0.0008 | 500 | 2.6010 | 0.0010 | 0.0004 | 2.6027 | 0.0027 | 0.0004 | 2.5968 | 0.0032 | 0.0004 | | 50 | -0.5838 | 0.0162 | 0.0003 | -0.6040 | 0.0040 | <0.0001 | -0.6140 | 0.0140 | 0.0002 | 200 | -0.5929 | 0.0071 | 0.0001 | -0.5980 | 0.0020 | <0.0001 | -0.6082 | 0.0082 | 0.0001 | 500 | -0.6048 | 0.0048 | <0.0001 | -0.6012 | 0.0012 | <0.0001 | -0.6032 | 0.0032 | <0.0001 | | 50 | -0.4115 | 0.0115 | 0.0002 | -0.4047 | 0.0047 | 0.0001 | -0.4113 | 0.0113 | 0.0002 | 200 | -0.4014 | 0.0014 | <0.0001 | -0.4015 | 0.0015 | <0.0001 | -0.3911 | 0.0089 | 0.0001 | 500 | -0.3994 | 0.0006 | <0.0001 | -0.4051 | 0.0051 | <0.0001 | -0.4027 | 0.0027 | <0.0001 | NBP | 50 | 1.0445 | 0.0445 | 0.0020 | 5.3994 | 0.3994 | 0.1596 | 151.3485 | 1.3485 | 1.8185 | 200 | 1.0127 | 0.0127 | 0.0003 | 4.9996 | 0.0004 | 0.0001 | 149.2178 | 0.7822 | 0.6120 | 500 | 0.9992 | 0.0008 | <0.0001 | 5.0914 | 0.0914 | 0.0084 | 150.2360 | 0.2360 | 0.0557 | | 50 | 0.1491 | 0.0491 | 0.0024 | 0.1234 | 0.0234 | 0.0006 | 0.0994 | 0.0006 | <0.0001 | 200 | 0.1429 | 0.0429 | 0.0018 | 0.1162 | 0.0162 | 0.0003 | 0.0942 | 0.0058 | <0.0001 | 500 | 0.1157 | 0.0157 | 0.0003 | 0.1066 | 0.0066 | 0.0001 | 0.0970 | 0.0030 | <0.0001 | Ordinal process | | | | | | | | | | | | 50 | 0.6287 | 0.0287 | 0.0008 | 0.6343 | 0.0343 | 0.0012 | 0.5890 | 0.0110 | 0.0001 | 200 | 0.6183 | 0.0183 | 0.0003 | 0.6325 | 0.0325 | 0.0011 | 0.5883 | 0.0117 | 0.0001 | 500 | 0.6004 | 0.0004 | <0.0001 | 0.6128 | 0.0128 | 0.0002 | 0.5972 | 0.0028 | <0.0001 | | 50 | 0.1291 | 0.0291 | 0.0008 | 0.0854 | 0.0146 | 0.0002 | 0.0887 | 0.0113 | 0.0001 | 200 | 0.1393 | 0.0393 | 0.0015 | 0.1248 | 0.0248 | 0.0006 | 0.0987 | 0.0013 | <0.0001 | 500 | 0.1112 | 0.0112 | 0.0003 | 0.1001 | 0.0001 | 0.0002 | 0.0922 | 0.0078 | 0.0003 | | 50 | -0.8001 | 0.1999 | 0.0400 | -0.9252 | 0.0748 | 0.0056 | -0.9035 | 0.0965 | 0.0093 | 200 | -0.8649 | 0.1351 | 0.0183 | -0.9148 | 0.0852 | 0.0073 | -0.9072 | 0.0928 | 0.0086 | 500 | -0.9451 | 0.0549 | 0.0030 | -0.9989 | 0.0011 | <0.0001 | -0.9704 | 0.0296 | 0.0009 | | 50 | 0.8383 | 0.1617 | 0.0261 | 0.8427 | 0.1573 | 0.0247 | 0.8608 | 0.1392 | 0.0194 | 200 | 1.1821 | 0.1821 | 0.0332 | 0.8955 | 0.1045 | 0.0109 | 0.8312 | 0.1688 | 0.0285 | 500 | 0.9985 | 0.0015 | <0.0001 | 0.9424 | 0.0576 | 0.0033 | 0.9822 | 0.0178 | 0.0003 | | 50 | 1.3552 | 0.0552 | 0.0031 | 1.3816 | 0.0816 | 0.0067 | 1.3911 | 0.0911 | 0.0083 | 200 | 1.3940 | 0.0940 | 0.0089 | 1.3935 | 0.0935 | 0.0088 | 1.3925 | 0.0925 | 0.0086 | 500 | 1.2904 | 0.0096 | 0.0001 | 1.3595 | 0.0595 | 0.0035 | 1.3013 | 0.0013 | <0.0001 | | 50 | 0.4383 | 0.0383 | 0.0015 | 0.4171 | 0.0171 | 0.0003 | 0.4276 | 0.0276 | 0.0008 | 200 | 0.4135 | 0.0135 | 0.0002 | 0.4253 | 0.0253 | 0.0007 | 0.4327 | 0.0327 | 0.0011 | 500 | 0.4283 | 0.0283 | 0.0008 | 0.4218 | 0.0218 | 0.0005 | 0.4165 | 0.0165 | 0.0003 |
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NBP: negative binomial parameter; AVB: the absolute value of biases; MSE: mean square error.
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