Table 2.

Fit statistics for a latent class analysis of positive screening for substances among active motor vehicle operators

Classes	LL	Parameters	BIC	LMR	BLRT	Entropy
1	-1,755.58	10	3,570.89	–	–	–
2	-1,703.20	21	3,531.85	p = .0171	p < .001	.964
3	-1,669.96	32	3,531.07	p = .0928	p < .001	.807
4	-1,647.65	43	3,552.17	p = .0253	p < .001	.906
5	-1,630.69	54	3,583.96	p = .1357	p < .001	.865

Notes: Bold indicates the best fitting model. LL = log likelihood; BIC = Bayesian Information Criterion; LMR = Lo–Mendell–Rubin adjusted likelihood ratio test; BLRT = parametric bootstrap likelihood ratio test.