Table 6.

Overall cost (in 2014 dollars) by supervision condition.

	Supervision Condition
Cost Category	MIA: STEP ($)	SAU ($)
MI Workshopsa	34,958	18,236
MIA: STEP Workshopb	21,592	0
Post-Workshop Practice Casec	8,276	0
Consultationsd	56,077	0
Supervisionse	40,676	151
Self-study MI Materialsf	12,261	9680
Miscellaneousg	758	758
Total	174,599	28,825

Notes. MIA: STEP = Motivational Interviewing Assessment: Supervisory Tools for Enhancing Proficiency, SAU = Supervision-as-Usual. Incremental cost of MIA: STEP, compared to SAU: $145.774.00.

^aThere were 18 MI workshops, including seven extra MI workshops that were required as 11 clinicians (2 SAU, 9 MIA: STEP) were replaced during the trial.

^bThere were 4 MIA: STEP workshops.

^cThere were 11 post-workshop practice cases (one for each supervisor assigned to MIA: STEP).

^dThere were 97 consultations between experts and supervisors.

^eThere were 5 supervisions in SAU and 247 supervisions in MIA: STEP.

^fIncludes self-study time during company time only.

^gMiscellaneous costs (e.g., DVD player, LCD projector) split equally between supervision conditions.