Table 2.

Results of Monte Carlo simulation analyses examining power to detect aim 1 and aim 2 outcome effects

Outcome	Comparison (n per condition)	Predicted rates/effects	Power at α = .05
Aim 1
Reacha	Usual care (720)–preparation/implementation (480)	2–22%	98%
Adoptionb	Usual care (70)–preparation/implementation (70)	10–50%	95%
Implementation	No comparison
Maintenance	Preparation/implementation (480)–sustainment (1200)
Aim 2
Stimulant abstinence	Usual care (720)–preparation/implementation (480)	25–40%	90%
Treatment retention	Usual care (720)–preparation/implementation (480)	9 weeks–12 weeks	94%

Monte Carlo simulation multilevel power analyses featuring clustering in opioid treatment programs (anticipated ICC: 15%) and/or counselors (anticipated ICC: 10%)

^aAssessed among patients nested in counselors and opioid treatment programs

^bAsssessed among counselors nested in opioid treatment programs