Table 1.
n = 400 | n = 1000 | ||||||||
---|---|---|---|---|---|---|---|---|---|
Parameter | True | EST | SD | ESE | CP% | EST | SD | ESE | CP% |
Survival model of no-progression population | |||||||||
β0 | −1.0 | −1.08 | 0.26 | 0.26 | 94 | −1.04 | 0.16 | 0.16 | 93 |
γ01 | 1.0 | 0.96 | 0.23 | 0.22 | 94 | 0.97 | 0.13 | 0.13 | 94 |
γ02 | 0.2 | 0.22 | 0.23 | 0.24 | 94 | 0.20 | 0.14 | 0.14 | 95 |
Disease progression model of progression population | |||||||||
β1 | −0.5 | −0.54 | 0.16 | 0.16 | 94 | −0.52 | 0.10 | 0.10 | 94 |
γ11 | 1.0 | 1.08 | 0.14 | 0.14 | 91 | 1.04 | 0.09 | 0.08 | 94 |
γ12 | 0.0 | −0.01 | 0.14 | 0.15 | 94 | 0.00 | 0.09 | 0.09 | 95 |
Gap time model of progression population | |||||||||
β21 | −0.3 | −0.31 | 0.19 | 0.19 | 95 | −0.30 | 0.12 | 0.12 | 95 |
β22 | −0.5 | −0.50 | 0.20 | 0.20 | 95 | −0.51 | 0.12 | 0.12 | 96 |
γ21 | 0.6 | 0.61 | 0.18 | 0.18 | 95 | 0.60 | 0.11 | 0.11 | 95 |
γ22 | −0.5 | −0.51 | 0.16 | 0.16 | 94 | −0.50 | 0.10 | 0.10 | 95 |
γ23 | 0.5 | 0.51 | 0.17 | 0.17 | 94 | 0.50 | 0.10 | 0.10 | 95 |
γ24 | −0.4 | −0.41 | 0.27 | 0.28 | 95 | −0.41 | 0.17 | 0.17 | 95 |
Susceptibility model | |||||||||
α0 | 1.6 | 1.66 | 0.26 | 0.26 | 95 | 1.63 | 0.16 | 0.16 | 96 |
α1 | −1.8 | −1.80 | 0.27 | 0.28 | 94 | −1.79 | 0.17 | 0.16 | 96 |
α21 | 1.0 | 0.90 | 0.24 | 0.24 | 93 | 0.94 | 0.15 | 0.15 | 95 |
α22 | 0.1 | 0.11 | 0.26 | 0.27 | 94 | 0.11 | 0.16 | 0.15 | 95 |
Predicted survival functions in control arm | |||||||||
S0(τ/2) | 0.51 | 0.49 | 0.04 | 0.04 | 91 | 0.49 | 0.02 | 0.02 | 92 |
S0(τ) | 0.17 | 0.18 | 0.03 | 0.03 | 91 | 0.18 | 0.02 | 0.02 | 91 |
Predicted survival functions in experimental arm | |||||||||
S1(τ/2) | 0.63 | 0.61 | 0.03 | 0.03 | 94 | 0.61 | 0.02 | 0.02 | 92 |
S1(τ) | 0.32 | 0.33 | 0.03 | 0.03 | 93 | 0.33 | 0.02 | 0.02 | 94 |
EST, average of the parameter estimates; SD, sample standard deviation of the estimates; ESE, average of the standard error estimates; CP%, coverage probability of the 95% confidence interval based on a normal approximation.