Table 2.

Parameter estimates and class proportions for each class

Full data (N = 90)
Parameter	Class 1	Class 2	Class 3
Intercept	1.86	2.37	1.07
Linear slope	0.52	−0.18	0.08
Quadratic slope	−0.03	0.01	−0.01
Baseline variance	1.14	1.19	0.13
3-month variance	1.33	0.95	0.27
6-month variance	6.06	0.30	0.30
12-month variance	1.98	0.51	0.23
Residual correlation matrix	$\left[\begin{array}{cccc}\hfill 1\hfill & \hfill \hfill & \hfill \hfill & \hfill \hfill \\ \hfill .29\hfill & \hfill 1\hfill & \hfill \hfill & \hfill \hfill \\ \hfill .65\hfill & \hfill .75\hfill & \hfill 1\hfill & \hfill \hfill \\ \hfill .77\hfill & \hfill .60\hfill & \hfill .72\hfill & \hfill 1\hfill \end{array}\right]$	$\left[\begin{array}{cccc}\hfill 1\hfill & \hfill \hfill & \hfill \hfill & \hfill \hfill \\ \hfill .29\hfill & \hfill 1\hfill & \hfill \hfill & \hfill \hfill \\ \hfill .50\hfill & \hfill .17\hfill & \hfill 1\hfill & \hfill \hfill \\ \hfill .73\hfill & \hfill .40\hfill & \hfill .72\hfill & \hfill 1\hfill \end{array}\right]$	$\left[\begin{array}{cccc}\hfill 1\hfill & \hfill \hfill & \hfill \hfill & \hfill \hfill \\ \hfill .80\hfill & \hfill 1\hfill & \hfill \hfill & \hfill \hfill \\ \hfill .69\hfill & \hfill .85\hfill & \hfill 1\hfill & \hfill \hfill \\ \hfill .24\hfill & \hfill .64\hfill & \hfill .45\hfill & \hfill 1\hfill \end{array}\right]$
Class proportion	18%	34%	48%
Outliers removed (N = 85)
Intercept	1.84	2.38	0.99
Linear slope	0.21	−0.14	0.08
Quadratic slope	−0.011	0.003	−0.006
Baseline variance	0.53	0.97	0.08
3-month variance	0.71	0.84	0.21
6-month variance	1.99	0.39	0.24
12-month variance	0.78	0.35	0.26
Residual correlation matrix	$\left[\begin{array}{cccc}\hfill 1\hfill & \hfill \hfill & \hfill \hfill & \hfill \hfill \\ \hfill -.50\hfill & \hfill 1\hfill & \hfill \hfill & \hfill \hfill \\ \hfill .39\hfill & \hfill .22\hfill & \hfill 1\hfill & \hfill \hfill \\ \hfill .35\hfill & \hfill .44\hfill & \hfill .14\hfill & \hfill 1\hfill \end{array}\right]$	$\left[\begin{array}{cccc}\hfill 1\hfill & \hfill \hfill & \hfill \hfill & \hfill \hfill \\ \hfill .13\hfill & \hfill 1\hfill & \hfill \hfill & \hfill \hfill \\ \hfill .65\hfill & \hfill .29\hfill & \hfill 1\hfill & \hfill \hfill \\ \hfill .44\hfill & \hfill .83\hfill & \hfill .38\hfill & \hfill 1\hfill \end{array}\right]$	$\left[\begin{array}{cccc}\hfill 1\hfill & \hfill \hfill & \hfill \hfill & \hfill \hfill \\ \hfill .78\hfill & \hfill 1\hfill & \hfill \hfill & \hfill \hfill \\ \hfill .68\hfill & \hfill .78\hfill & \hfill 1\hfill & \hfill \hfill \\ \hfill .47\hfill & \hfill .79\hfill & \hfill .54\hfill & \hfill 1\hfill \end{array}\right]$
Class proportion	18%	36%	46%