Table 2.

Fit statistics and entropy for a latent class analysis of 8 substances used in the past month among 552 users of cocaine and heroin in the past 6 months.

Classes	LLa	parameters	BICb	LMRc	BLRTd	Entropy	s.c. r.f. (f)e
1	−2685.88	8	5422.27	NAf	NAf	NAf	NAf
2	−2486.57	17	5080.47	p < .001	p < 0.001	0.769	.49 (268.2)
3	−2432.89	26	5029.94	p = .002	p < 0.001	0.742	.22 (120.1)
4	−2417.04	35	5055.06	p = .028	p < 0.001	0.744	.13 (70.3)
5	−2402.25	44	5082.29	p = .147	p < 0.001	0.784	.08 (44.1)
6	−2395.05	53	5124.71	p = .591	p = 0.600	0.796	.05 (26.4)

^aLog Likelihood;

^bBayesian Information Criteria;

^cLo-Mendell-Rubin adjusted likelihood ratio test;

^dparametric Bootstrap Likelihood Ratio Test;

^esmallest class relative frequency (frequency);

^fNot Applicable

Ideal number of classes based on fit statistic shown in bold.