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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: Drug Alcohol Depend. 2008 Jul 31;98(3):249–263. doi: 10.1016/j.drugalcdep.2008.06.008

Table 3.

Fit Statistics from the Latent Class Analyses

Model
Description		 Log-likelihood
(L2)		 BICL2 AICL2 Npar/DF P-value CEa %ERb L2/df
1-class 12445.92 8473.08 11215.92 24/615 4.6 e-2171 .0000 0.0 20.24
2-class 10201.52 6428.94 9033.52 55/584 3.0 e-1729 .0385 81.97 17.46
3-class 9628.81 6056.48 8522.81 86/553 3.0 e-1631 .0632 77.37 17.41
4-class 9348.56 5976.49 8304.56 117/522 3.6 e-1593 .0724 75.12 17.91
5-class 9150.80 5978.98 8168.80 148/491 3.8 e-1572 .0820 73.53 18.64
6-class 9036.55 6064.99 8116.55 179/460 1.7 e-1568 .0812 72.61 19.64
7-class 8845.52 6074.23 7987.52 210/429 2.7 e-1549 .0726 71.08 20.62
a

Note. CE = Classification Error is the proportion of cases expected to be misclassified values closer to zero are better).

b

%ER = percent error reduction in L2 when model is pitted against the null model of complete independence. Model is conditioned for gender (male), age group (< 21 years of age), race (white), marital status (married), education (high school graduate), and site.