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. 2019 Dec 3;19:222. doi: 10.1186/s12874-019-0873-y

Table 3.

Results of the association parameter α obtained from the baseline Cox model, the TVCM and the joint model fitted to data generated considering the linear marker trajectory (scenario 2 of Table 1) with α∈(0,0.3,0.6) and σε∈(0.1,0.3,0.5) with CV ∈(3.1%,9.4%,15.6%). Mean of the maximum likelihood estimates (Est), asymptotic standard error (ASE), bias, percentage bias (%Bias) and 95% coverage probabilities (CP) are shown

α=0 α=0.3 α=0.6
σε Model Est ASE Bias CP Est ASE %Bias CP Est ASE %Bias CP
Cox.baseline 0.000 0.060 0.000 95 0.254 0.056 -15 86 0.545 0.059 -9.2 83
0.1 TVCM(1x/week) -0.003 0.060 -0.003 96 0.293 0.058 -2.3 95 0.582 0.061 -3.0 93
TVCM(4x/week) -0.001 0.060 -0.001 95 0.298 0.059 -0.7 94 0.594 0.062 -1.0 94
joint model -0.003 0.059 -0.003 96 0.301 0.058 0.3 95 0.604 0.061 0.7 94
Cox.baseline 0.000 0.058 0.000 96 0.240 0.054 -20 79 0.508 0.057 -15 62
0.3 TVCM(1x/week) -0.003 0.058 -0.003 96 0.275 0.057 -8.3 92 0.541 0.059 -9.8 83
TVCM(4x/week) -0.001 0.058 -0.001 95 0.279 0.057 -7.0 92 0.550 0.059 -8.3 86
joint model -0.003 0.060 -0.003 95 0.301 0.059 0.3 95 0.604 0.064 0.7 94
Cox.baseline 0.000 0.055 0.000 96 0.216 0.051 -28 61 0.449 0.053 -25 23
0.5 TVCM(1x/week) -0.003 0.055 -0.003 96 0.244 0.053 -19 80 0.474 0.055 -21 35
TVCM(4x/week) -0.002 0.055 -0.002 95 0.247 0.054 -18 84 0.480 0.055 -20 40
joint model -0.004 0.062 -0.004 95 0.301 0.062 0.3 95 0.606 0.069 1.0 94