Table 4.

Bayesian logistic regressions on cluster membership on abstinence by clustering algorithm. The Bayes facor of 5.88 indicates moderate evidence favoring the superiority of the 2-cluster solution over the 3-cluster solution.

	k-means Clustering				BNP+
	OR*	HPD#	Posterior probability < 0		OR	HPD	Posterior probability < 0
C>P & vs. P>C ^	0.58	0.28 – 0.91	.983		0.62	0.28 – 0.98	0.961
C>P vs. New Cluster					0.61	0.24 – 1.08	0.069
P>C vs. New Cluster					1.02	0.47 – 1.74	0.442
DIC @	369.37				371.89
Bayes Factor (k-means vs. BNP models)	5.88

⁺Bayesian Non-Parametric;

^*Odds Ratio;

^#Highest Posterior Density;

^&larger brain responses to cigarette-related cues than non-nicotine-related pleasant stimuli;

^{^}larger brain responses to non-nicotine-related pleasant stimuli than cigarette-related cues;

^@Deviance Information Criterion