Table 3.
Simulation results under marginal model λik(t) = λ0k(t) exp{β1kXik + β2kZik}, the censoring rate is 60%.
|
β11 = ln(2) |
β21 = −ln(1.3) |
β12 = 0.5 |
β22 = ‒0.1 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | θ | Method | |Bias| (×102) |
SD (×10) |
SE (×10) |
CR | RE | |Bias| (×102) |
SD (×10) |
SE (×10) |
CR | RE | |Bias| (×102) |
SD (×10) |
SE (×10) |
CR | RE | |Bias| (×102) |
SD (×10) |
SE (×10) |
CR | RE |
|
σ = 0.1 |
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| 300 | 0.2 | EPPL | 0.54 | 1.16 | 1.07 | 0.93 | – | 0.10 | 0.96 | 0.94 | 0.94 | – | 0.17 | 1.04 | 1.03 | 0.95 | – | 0.08 | 0.92 | 0.94 | 0.95 | – |
| EQIF | 0.32 | 1.02 | 0.92 | 0.92 | 1.28 | 0.18 | 0.82 | 0.79 | 0.93 | 1.39 | 0.17 | 0.92 | 0.88 | 0.94 | 1.26 | 0.28 | 0.78 | 0.78 | 0.95 | 1.39 | ||
| 0.5 | EPPL | 0.54 | 1.16 | 1.07 | 0.93 | – | 0.10 | 0.96 | 0.94 | 0.94 | – | 0.22 | 1.03 | 1.03 | 0.95 | – | 0.02 | 0.92 | 0.94 | 0.95 | – | |
| EQIF | 0.42 | 1.10 | 0.99 | 0.92 | 1.11 | 0.05 | 0.89 | 0.86 | 0.94 | 1.16 | 0.17 | 0.98 | 0.95 | 0.94 | 1.10 | 0.09 | 0.86 | 0.85 | 0.95 | 1.14 | ||
| 2 | EPPL | 0.54 | 1.16 | 1.07 | 0.93 | – | 0.10 | 0.96 | 0.94 | 0.94 | – | 0.25 | 1.06 | 1.03 | 0.93 | – | 0.08 | 0.92 | 0.94 | 0.95 | – | |
| EQIF | 0.58 | 1.17 | 1.04 | 0.92 | 0.99 | 0.11 | 0.96 | 0.92 | 0.94 | 1.00 | 0.24 | 1.06 | 1.00 | 0.93 | 1.00 | 0.05 | 0.93 | 0.91 | 0.94 | 0.99 | ||
|
σ = 1 |
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| 0.2 | EPPL | 0.65 | 1.31 | 1.23 | 0.93 | – | 0.79 | 0.96 | 0.98 | 0.95 | – | 0.27 | 1.21 | 1.18 | 0.95 | – | 0.30 | 0.92 | 0.96 | 0.95 | – | |
| EQIF | 1.10 | 1.16 | 1.06 | 0.93 | 1.27 | 1.07 | 0.81 | 0.84 | 0.95 | 1.39 | 0.46 | 1.09 | 1.02 | 0.94 | 1.24 | 0.51 | 0.79 | 0.82 | 0.95 | 1.35 | ||
| 0.5 | EPPL | 0.65 | 1.31 | 1.23 | 0.93 | – | 0.79 | 0.96 | 0.98 | 0.95 | – | 0.01 | 1.20 | 1.18 | 0.95 | – | 0.18 | 0.93 | 0.96 | 0.95 | – | |
| EQIF | 0.96 | 1.24 | 1.13 | 0.92 | 1.10 | 0.94 | 0.88 | 0.90 | 0.95 | 1.18 | 0.14 | 1.15 | 1.09 | 0.93 | 1.09 | 0.32 | 0.87 | 0.88 | 0.95 | 1.14 | ||
| 2 | EPPL | 0.65 | 1.31 | 1.23 | 0.93 | – | 0.79 | 0.96 | 0.98 | 0.95 | – | 0.00 | 1.26 | 1.18 | 0.94 | – | 0.11 | 0.93 | 0.96 | 0.96 | – | |
| EQIF | 0.77 | 1.30 | 1.19 | 0.92 | 1.01 | 1.02 | 0.95 | 0.95 | 0.95 | 1.01 | 0.05 | 1.27 | 1.15 | 0.92 | 0.98 | 0.27 | 0.93 | 0.94 | 0.95 | 1.00 | ||
|
σ = 0.1 |
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| 600 | 0.2 | EPPL | 0.25 | 0.77 | 0.76 | 0.95 | – | 0.19 | 0.68 | 0.66 | 0.94 | – | 0.20 | 0.73 | 0.72 | 0.94 | – | 0.14 | 0.65 | 0.66 | 0.96 | – |
| EQIF | 0.16 | 0.68 | 0.66 | 0.95 | 1.31 | 0.20 | 0.57 | 0.56 | 0.94 | 1.40 | 0.24 | 0.63 | 0.62 | 0.95 | 1.34 | 0.27 | 0.54 | 0.55 | 0.96 | 1.42 | ||
| 0.5 | EPPL | 0.25 | 0.77 | 0.76 | 0.95 | – | 0.19 | 0.68 | 0.66 | 0.94 | – | 0.05 | 0.71 | 0.72 | 0.95 | – | 0.19 | 0.64 | 0.66 | 0.96 | – | |
| EQIF | 0.12 | 0.73 | 0.70 | 0.94 | 1.12 | 0.21 | 0.63 | 0.61 | 0.93 | 1.15 | 0.09 | 0.67 | 0.67 | 0.96 | 1.14 | 0.29 | 0.59 | 0.60 | 0.95 | 1.15 | ||
| 2 | EPPL | 0.25 | 0.77 | 0.76 | 0.95 | – | 0.19 | 0.68 | 0.66 | 0.94 | – | 0.06 | 0.71 | 0.72 | 0.95 | – | 0.27 | 0.63 | 0.66 | 0.96 | – | |
| EQIF | 0.19 | 0.77 | 0.75 | 0.94 | 1.00 | 0.18 | 0.68 | 0.65 | 0.94 | 0.99 | 0.06 | 0.71 | 0.71 | 0.94 | 1.00 | 0.34 | 0.63 | 0.65 | 0.96 | 1.00 | ||
|
σ = 1 |
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| 0.2 | EPPL | 0.19 | 0.93 | 0.88 | 0.94 | – | 0.51 | 0.68 | 0.69 | 0.95 | – | 0.05 | 0.85 | 0.83 | 0.94 | – | 0.28 | 0.65 | 0.68 | 0.96 | – | |
| EQIF | 0.40 | 0.82 | 0.76 | 0.93 | 1.27 | 0.53 | 0.57 | 0.59 | 0.96 | 1.42 | 0.12 | 0.75 | 0.72 | 0.94 | 1.30 | 0.36 | 0.56 | 0.58 | 0.96 | 1.37 | ||
| 0.5 | EPPL | 0.19 | 0.93 | 0.88 | 0.94 | – | 0.51 | 0.68 | 0.69 | 0.95 | – | 0.23 | 0.81 | 0.83 | 0.95 | – | 0.33 | 0.64 | 0.67 | 0.96 | – | |
| EQIF | 0.38 | 0.87 | 0.81 | 0.93 | 1.12 | 0.52 | 0.63 | 0.64 | 0.95 | 1.16 | 0.26 | 0.76 | 0.77 | 0.95 | 1.13 | 0.40 | 0.60 | 0.63 | 0.96 | 1.14 | ||
| 2 | EPPL | 0.19 | 0.93 | 0.88 | 0.94 | – | 0.51 | 0.68 | 0.69 | 0.95 | – | 0.41 | 0.81 | 0.83 | 0.95 | – | 0.39 | 0.63 | 0.67 | 0.97 | – | |
| EQIF | 0.30 | 0.93 | 0.86 | 0.93 | 1.00 | 0.53 | 0.68 | 0.68 | 0.95 | 1.00 | 0.43 | 0.81 | 0.81 | 0.94 | 0.99 | 0.45 | 0.63 | 0.66 | 0.96 | 1.00 | ||