Table 3.

Comparison of the joint model and the separate analysis of the longitudinal outcome (n = 200)

		Separate			Joint
Parameter	True	Bias	SE	CP	Bias	SE	CP	MSES/MSEJ
Longitudinal
Fixed effects
β 1	−1	0.322	0.301	0.795	−0.020	0.155	0.970	7.954
β 2	1.5	0.030	0.352	0.940	0.014	0.294	0.960	1.441
β 3	0.8	−0.216	0.528	0.935	0.039	0.287	0.990	3.879
α 2	0	−0.023	0.285	0.950	−0.008	0.236	0.975	1.466
θ 1	−0.5	0.017	0.161	0.960	−0.010	0.165	0.950	0.959
θ 2	1	0.023	0.178	0.955	0.015	0.153	0.950	1.363
Random effects
${\sigma }_b^2$	1	−0.059	0.589	0.900	0.021	0.346	0.955	2.916
Survival
Fixed effects
γ 11	0.8	−0.015	0.152	0.950	0.062	0.163	0.965	0.767
γ 12	−1	0.014	0.308	0.950	−0.079	0.297	0.955	1.006
γ 21	0.5	0.009	0.170	0.970	0.041	0.159	0.965	1.075
γ 22	−1	−0.024	0.301	0.970	−0.072	0.269	0.975	1.176
Random effects
ν 2	0.5	−0.192	0.894	0.985	0.044	0.419	0.960	4.711
${\sigma }_u^2$	0.5	−0.112	0.418	0.910	0.203	0.473	0.930	0.707
Covariance
ρ bu	−0.9				0.048	0.127	0.990

Note: Large bias and poor CP are highlighted in boldface.