CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
Effect of emergency department opioid prescribing on health outcomes.
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Hayward Jake, Rosychuk Rhonda J, McRae Andrew D, Sinnarajah Aynharan, Dong Kathryn, Tanguay Robert, Montgomery Lori, Huang Andrew, Innes Grant
Аннотация
BACKGROUND: The relation between emergency department opioid prescribing and subsequent harm is complex and poorly studied. We sought to quantify adverse outcomes, incremental risk, and rates of prolonged opioid use among emergency department patients receiving an opioid prescription and propensity-matched controls.
METHODS: We used administrative data to sample all Alberta emergency department visits over 10 years, excluding patients with cancer, palliative care, or concurrent opioid use. Treated patients filled an opioid prescription within 72 hours after their index visit; untreated patients did not. We generated propensity scores to identify matched controls among untreated patients. The 1-year primary composite outcome included opioid-related emergency visits (e.g., overdoses), new opioid agonist therapy, all-cause hospital admission, or death. The secondary outcome was prolonged opioid use.
RESULTS: After 13 028 575 eligible visits, 689 074 patients (5.3%) filled an opioid prescription. The mean age was 43.9 years, and 49.8% of patients were female. Most were high-acuity patients with traumatic, gastrointestinal-genitourinary, or musculoskeletal complaints. Patients who received opioids experienced 1.4% more primary outcome events (17.1% v. 15.7%), driven by all-cause hospital admissions (16.4% v. 15.1%; number needed to harm [NNH] = 53) and prolonged opioid use (4.5% v. 3.3%; NNH = 59). Opioid-related visits, new opioid agonist treatment, and mortality were unaffected. Incremental risk was low for patients with documented mental health conditions or substance use, and was highest for opioid-naive patients, older patients, and males.
INTERPRETATION: Emergency department opioid prescriptions were associated with small increases in subsequent opioid prescription use and hospital admission, particularly in older and opioid-naive patients, and males; they were not associated with overdoses, new opioid agonist therapy, or mortality. Physicians should understand patient-specific incremental risks when prescribing opioids for acute pain.
METHODS: We used administrative data to sample all Alberta emergency department visits over 10 years, excluding patients with cancer, palliative care, or concurrent opioid use. Treated patients filled an opioid prescription within 72 hours after their index visit; untreated patients did not. We generated propensity scores to identify matched controls among untreated patients. The 1-year primary composite outcome included opioid-related emergency visits (e.g., overdoses), new opioid agonist therapy, all-cause hospital admission, or death. The secondary outcome was prolonged opioid use.
RESULTS: After 13 028 575 eligible visits, 689 074 patients (5.3%) filled an opioid prescription. The mean age was 43.9 years, and 49.8% of patients were female. Most were high-acuity patients with traumatic, gastrointestinal-genitourinary, or musculoskeletal complaints. Patients who received opioids experienced 1.4% more primary outcome events (17.1% v. 15.7%), driven by all-cause hospital admissions (16.4% v. 15.1%; number needed to harm [NNH] = 53) and prolonged opioid use (4.5% v. 3.3%; NNH = 59). Opioid-related visits, new opioid agonist treatment, and mortality were unaffected. Incremental risk was low for patients with documented mental health conditions or substance use, and was highest for opioid-naive patients, older patients, and males.
INTERPRETATION: Emergency department opioid prescriptions were associated with small increases in subsequent opioid prescription use and hospital admission, particularly in older and opioid-naive patients, and males; they were not associated with overdoses, new opioid agonist therapy, or mortality. Physicians should understand patient-specific incremental risks when prescribing opioids for acute pain.