Prescribing excess opioids to surgical patients increases the risk of chronic opioid use and diversion of unused opioids. In a recent cluster randomized clinical trial (RCT), social norms–based feedback to surgeons prescribing postoperative opioids above guideline-recommended quantities showed significantly reduced guideline-discordant prescribing behavior during the intervention period. This study describes the persistence of effects 1 year after stopping the interventions.
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