Table 2.

Relative model fit indexes for one- to four-class growth mixture models

Model	Parameters	Log-likelihood	Entropya	BICb	LMR p valuec
One class	21	−20,864	–	41,873	–
Two class	26	−12,689	.57	25,552	.0039
Three class	30	−9,294	.76	18,780	.0004
Four class	37	−9,270	.73	18,782	.1373

Notes: Covariates were included in model estimations.

^aEntropy = average classification precision; higher values indicate better classification of individuals into distinct classes;

^bBIC = Bayesian Information Criterion; lower values indicate better fit;

^cLMR p value = Lo-Mendell-Rubin p value; indicates significance in model fit improvement by estimating one more class.