Covariate of Interest	True Parameter Value	Joint Model ( $l_{i} = 12$ )			Joint Model ( $l_{i} = 36$ )			Joint Model ( $l_{i} = 72$ )
Covariate of Interest	True Parameter Value	Mean	SD	MSE	Mean	SD	MSE	Mean	SD	MSE
Age (scaled)	0.5	0.492	0.149	0.013	0.493	0.144	0.015	0.495	0.145	0.016
$β_{i 0}^{(L)}$	−0.3	−0.284	0.116	0.008	−0.308	0.116	0.006	−0.295	0.115	0.007
$κ_{i}^{2}^{(L)}$	0.7	0.595	0.271	0.042	0.639	0.284	0.043	0.651	0.293	0.039