RecruitingBehavioural interventionLeveraging Regulatory Flexibility for Methadone Take-Home Dosing to Improve Retention in Treatment for Opioid Use DisorderUsing a stepped-wedge randomized controlled trial, the study will test whether a clinic-level multidimensional intervention conducted in 36 opioid treatment programs (OTPs) will improve clinical decision making, regulatory confusion, legal liability concerns, capacity for clinical practice change, and financial barriers to take- home dosing (THD) for methadone as compared to treatment as usual.