Table 2.

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

Overall Model Fit
	1-class	2-class	3-class	4-class
saBIC	1048.07	795.55	404.27	665.85
Entropy	1.00	.936	.971	.967
ALC-Prob.	-	.958–.987	.98 – 1.0	.92 – 1.0
% sample/class
1	65 (100%)	22 (35%)	21 (34%)	9 (15%)
2		40 (65%)	27 (44%)	13 (21%)
3			14 (23%)	26 (42%)
4				14 (23%)
LMR (p-value)	-	196.29 (.00)	102.12 (.00)	50.23 (.54)

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.