Table 3.

Parameter estimates, standard error (SE) and p values of linear mixed-effects models testing associations between STAGE-12 fidelity predictors and items in the ASI drug composite score^a

Fidelity Predictor Variables	ASI Drug Composite Score Items
	Number of days of drug use in past 30b	How many days in the past 30 have you experienced drug problems?	How troubled or bothered have you been within the past 30 days by drug problems?	How important to you now is treatment for drug problems?
Adherence	−1.66	2.43	0.82	0.95
	0.963	1.275	0.240	0.301
	p = 0.088	p = 0.059	p < 0.001	p = 0.002
Competence	−2.11	0.54	0.51	0.81
	0.783	1.109	0.213	0.256
	p = 0.008	p = 0.628	p = 0.017	p = 0.002
Empathy	−1.14	−0.31	0.30	0.60
	0.650	0.919	0.174	0.208
	p = 0.081	p = 0.737	p = 0.090	p = 0.005

^aLinear mixed-effects models were used to test relationships between fidelity ratings (adherence, competence, empathy) and treatment outcome variables. All models controlled for baseline value of the outcome, and for age, gender, and race, with clustering within site.

^bASI number of days of drug use calculated by summing number of days reported for each individual drug, and then subtracting number of days reported using more than one drug.