• Drug Alcohol Depend · Jan 2021

    Changes in opioid prescribing after implementation of mandatory registration and proactive reports within California's prescription drug monitoring program.

    • Alvaro Castillo-Carniglia, Andrés González-Santa Cruz, Magdalena Cerdá, Chris Delcher, Aaron B Shev, Garen J Wintemute, and Stephen G Henry.
    • Society and Health Research Center, Universidad Mayor, Chile; School of Public Health, Universidad Mayor, Chile; Department of Population Health, New York University, United States. Electronic address: alvacasti@gmail.com.
    • Drug Alcohol Depend. 2021 Jan 1; 218: 108405.

    BackgroundIn 2016, California updated its prescription drug monitoring program (PDMP), adding two key features: automated proactive reports to prescribers and mandatory registration for prescribers and pharmacists. The effects of these changes on prescribing patterns have not yet been examined. We aimed to evaluate the joint effect of these two PDMP features on county-level prescribing practices in California.MethodsUsing county-level quarterly data from 2012 to 2017, we estimated the absolute change associated with the implementation of these two PDMP features in seven prescribing indicators in California versus a control group comprising counties in Florida and Washington: opioid prescription rate per 1000 residents; patients' mean daily opioid dosage in milligrams of morphine equivalents[MME]; prescribers' mean daily MME prescribed; prescribers' mean number of opioid prescriptions per day; percentage of patients getting >90 MME/day; percentage of days with overlapping prescriptions for opioids and benzodiazepines; multiple opioid provider episodes per 100,000 residents.ResultsProactive reports and mandatory registration were associated with a 7.7 MME decrease in patients' mean daily opioid dose (95 %CI: -11.4, -2.9); a 1.8 decrease in the percentage of patients prescribed high-dose opioids (95 %CI: -2.3, -0.9); and a 6.3 MME decrease in prescribers' mean daily dose prescribed (95 %CI: -10.0, -1.3).ConclusionsCalifornia's implementation of these two PDMP features was associated with decreases in the total quantity of opioid MMEs prescribed, and indicators of patients prescribed high-dose opioids compared to states that had PDMP's without these features. Rates of opioid prescribing and other high-risk prescribing patterns remained unchanged.Copyright © 2020 Elsevier B.V. All rights reserved.

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