Table 3.

Comparative latent profile analysis overall model fit statistics for therapist reports on the therapeutic alliance.

Overall Model Fit
	1-class	2-class	3-class	4-class
saBIC	968.079	774.26	698.48	636.45
Entropy	1.00	.95	.95	.97
ALC-Prob. Range	-	.98 – 1.0	.97 – 1.0	.97 – 1.0
% sample/class
1	65 (100%)	25 (40%)	18 (29%)	19 (31%)
2		37 (60%)	24 (39%)	20 (32%)
3			20 (32%)	18 (29%)
4				5 (8%)
LMR (p-value)	-	139.36 (.00)	86.91 (.03)	78.85 (.91)

Notes: sample size adjusted Bayesian information criterion; ALC-Prob. = average latent class probability for most likely latent class membership; LRM = Lo-Mendell-Rubin adjusted likelihood ratio test. Wald tests of equality were used to compare profiles in models with more than one class on follow-up percent days abstinent. Thus, in the 1-class model the total N is 65, as there were no classes to compare; the total N is 62 for the 2- through 4-class models due to the loss of 3 participants who failed to provide follow-up data.