Table 4.
Results from simulation study under setting 2
Type of parameterb | True value |
Mean estimate |
Sample SEa |
Mean Asy. SEa |
Mean bootstrap SE |
|
---|---|---|---|---|---|---|
β12 | Age | 0.036 | 0.037 | 0.0060 | 0.0016 | 0.0062 |
Tran | 0.16 | 0.15 | 0.042 | 0.035 | 0.039 | |
Frail | 0.90 | 0.87 | 0.190 | 0.120 | 0.190 | |
Frail:tran | −0.084 | −0.081 | 0.039 | 0.020 | 0.040 | |
Alone | −0.26 | −0.28 | 0.096 | 0.074 | 0.099 | |
Alone:tran | 0.037 | 0.038 | 0.031 | 0.024 | 0.030 | |
Depress | 0.28 | 0.25 | 0.094 | 0.053 | 0.095 | |
β13 | Age | 0.075 | 0.075 | 0.020 | 0.003 | 0.019 |
β21 | Age | −0.015 | −0.015 | 0.0054 | 0.003 | 0.0056 |
Tran | −0.012 | −0.015 | 0.012 | 0.019 | 0.017 | |
Frail | −0.26 | −0.27 | 0.17 | 0.14 | 0.17 | |
β23 | Frail | −0.81 | −0.82 | 0.27 | 0.26 | 0.27 |
Tran | −0.13 | −0.12 | 0.066 | 0.066 | 0.069 | |
Frail:tran | 0.12 | 0.13 | 0.057 | 0.057 | 0.062 | |
Sex | −0.81 | −0.81 | 0.18 | 0.19 | 0.19 | |
γ12 | 1 | 1 | 0 | 0 | 0 | |
γ13 | −0.5 | −0.66 | 1.30 | 1.07 | 1.32 | |
γ21 | 1 | 1 | 0 | 0 | 0 | |
γ23 | 5.0 | 5.36 | 1.79 | 1.44 | 1.82 | |
Variance | var(ηi1) | 0.16 | 0.13 | 0.050 | 0.052 | 0.049 |
Components | cov(ηi1, ηi2) | −0.05 | 0.036 | 0.013 | 0.016 | 0.012 |
var(ηi2) | 0.02 | 0.015 | 0.006 | 0.008 | 0.006 |
The “Sample SE” denotes the standard deviation of the parameter estimates from 100 simulated data sets and the “Mean Asy. SE” denotes the average of the asymptotic standard errors obtained from the 100 simulated data sets.
We use k to index the state from which transition is made. We use l = 2 and 3 to denote the states of disability and death that can be transited to from state 1. We use l = 1 and 3 to denote the states of independence and death that can be transited to from state 2.