Table 1.

Baseline Characteristics of Provider Participants

	Overall (N = 38)		Workshop (N = 13)		Apprenticeship (N = 12)		Consult (N = 13)
	N	%	N	%	N	%	N	%	p value†
Sex									0.77
Female	33	86.8	11	84.6	10	83.3	12	92.3
Male	5	13.2	2	15.4	2	16.7	1	7.7
Race/ethnicity									0.4
White, non-Latino	29	76.3	10	76.9	11	91.7	8	61.5
Black, non-Latino	3	7.9	1	7.7	1	8.3	1	7.7
Asian, non-Latino	3	7.9	2	15.4	0	0.0	1	7.7
White, Latino	2	5.3	0	0.0	0	0.0	2	15.4
Other, non-Latino	1	2.6	0	0.0	0	0.0	1	7.7
Type of clinician									0.96
Physician’s assistant	14	36.8	5	38.5	4	33.3	5	38.5
Nurse	19	50.0	6	46.2	6	50.0	7	53.8
Doctor	5	13.2	2	15.4	2	16.7	1	7.7
Highest degree earned									0.69
Associate’s	4	10.5	1	7.7	2	16.7	1	7.7
Bachelor’s	14	36.8	6	46.2	4	33.3	4	30.8
Master’s	14	36.8	4	30.8	3	25.0	7	53.8
Doctorate	6	15.8	2	15.4	3	25.0	1	7.7
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Age in years	35.3	11.0	39.2	13.2	34.4	8.9	32.2	10.1	0.27
Motivation for MI*
Interested in learning MI*	8.1	1.7	8.2	1.6	7.8	2.2	8.2	1.2	0.97
Confident in ability to use MI*	4.6	3.1	4.1	3.5	4.3	3.1	5.4	2.8	0.50
Likely to use MI*	5.3	3.5	5.1	3.9	5.0	3.7	5.8	3.1	0.87
Mean motivation score*	6.0	2.3	5.8	2.5	5.7	2.6	6.5	2.0	0.66
Estimated % of patients currently misusing substances	49.6	19.9	49.2	19.3	44.2	19.8	55.0	20.8	0.41

Column percentages may not add up to 100% due to rounding

*Motivation items were measured on a scale from 0 (not at all) to 10 (extremely)

^†p values are from Fisher’s exact test for categorical variables and the Kruskal-Wallis test for continuous variables