TABLE 2.

Information criteria and fit indexes for the unconditional GMM models.

Linear unconditional model (no covariates)
Number of profiles	Parameters*	BIC	B-LRT p-value	Entropy	Number of subjects (%) in each class	Posterior probability estimate of class membership
2	16	2069.88	<0.05	0.77	70 (65%), 38 (35%)	0.95, 0.91
3	15	2072.80	<0.001	0.71	39 (36%), 37 (34%), 32 (30%)	0.81, 0.90, 0.88
4	20	2085.39	1.00	0.65	24 (22%), 19 (18%), 31 (29%), 34 (31%)	0.81, 0.73, 0.92, 0.73

BIC, Bayesian Information Criterion; B-LRT, Bootstrap Likelihood Ratio Test. * Intercept and slope variance fixed to zero in some cases.