Impact of 30-day prescribed opioid dose trajectory on fatal overdose risk: A population-based, statewide cohort study

Author:

Henry Stephen G.ORCID,Fang Shao-You,Crawford Andrew J.,Wintemute Garen J.,Tseregounis Iraklis Erik,Gasper James J.,Shev Aaron,Cartus Abigail R.,Marshall Brandon D.L.,Tancredi Daniel J.,Cerdá Magdalena,Stewart Susan L.

Abstract

Abstract Background Both increases and decreases in patients’ prescribed daily opioid dose have been linked to increased overdose risk, but associations between 30-day dose trajectories and subsequent overdose risk have not been systematically examined. Objective To examine the associations between 30-day prescribed opioid dose trajectories and fatal opioid overdose risk during the subsequent 15 days. Design Statewide cohort study using linked prescription drug monitoring program and death certificate data. We constructed a multivariable Cox proportional hazards model that accounted for time-varying prescription-, prescriber-, and pharmacy-level factors. Participants All patients prescribed an opioid analgesic in California from March to December, 2013 (5,326,392 patients). Main Measures Dependent variable: fatal drug overdose involving opioids. Primary independent variable: a 16-level variable denoting all possible opioid dose trajectories using the following categories for current and 30-day previously prescribed daily dose: 0-29, 30-59, 60-89, or ≥90 milligram morphine equivalents (MME). Key Results Relative to patients prescribed a stable daily dose of 0-29 MME, large (≥2 categories) dose increases and having a previous or current dose ≥60 MME per day were associated with significantly greater 15-day overdose risk. Patients whose dose decreased from ≥90 to 0-29 MME per day had significantly greater overdose risk compared to both patients prescribed a stable daily dose of ≥90 MME (aHR 3.56, 95%CI 2.24-5.67) and to patients prescribed a stable daily dose of 0-29 MME (aHR 7.87, 95%CI 5.49-11.28). Patients prescribed benzodiazepines also had significantly greater overdose risk; being prescribed Z-drugs, carisoprodol, or psychostimulants was not associated with overdose risk. Conclusions Large (≥2 categories) 30-day dose increases and decreases were both associated with increased risk of fatal opioid overdose, particularly for patients taking ≥90 MME whose opioids were abruptly stopped. Results align with 2022 CDC guidelines that urge caution when reducing opioid doses for patients taking long-term opioid for chronic pain.

Funder

National Institute on Drug Abuse

Publisher

Springer Science and Business Media LLC

Subject

Internal Medicine

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1. Centering the patient in decisions about opioid tapering;Expert Review of Clinical Pharmacology;2024-02-13

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