The project involved 33 surgeons and other licensed prescribers, representing 88% participation. Providers reviewed opioid-use information and research, then worked in specialty groups to create protocols covering discharge prescriptions, refills, and maximum duration for patients who had not previously used opioids.

Researchers compared prescribing during 10 months before the meeting with prescribing during the following year. Average monthly opioid amounts, the amount per prescription and patient, and the average number of prescriptions through 90 days after surgery all declined in the post-intervention period. The study did not report an increase in refill demand during that year.