State Comprehensive Opioid Prescribing Limits Associated With Reduced Opioid-Related Hospitalizations And ED Visits

Area of Science:

• Public Health
• Health Policy
• Epidemiology

Background:

• Prescription opioid overdose deaths surged over 400% from 1999-2022, linked to overprescribing.
• 39 states adopted opioid prescribing limits (OPLs) post-2016 CDC guidelines, with 12 implementing comprehensive limits (duration and dosage caps).
• The impact of comprehensive OPLs on health outcomes remains understudied.

Purpose of the Study:

• To evaluate the association between state OPLs and opioid-related inpatient stays and emergency department (ED) visits.
• To determine if comprehensive OPLs, combining duration limits and dosage caps, are more effective than partial measures.
• To identify demographic groups most affected by comprehensive OPLs.

Main Methods:

• Utilized a difference-in-differences design.
• Analyzed data from State Inpatient Databases and State Emergency Department Databases (2016-2021).
• Assessed the impact of comprehensive OPL adoption on opioid-related hospitalizations and ED visits per 100,000 population.

Main Results:

• Comprehensive OPLs were linked to a 6.2% decrease in opioid-related hospitalizations and an 11.9% decrease in ED visits per capita.
• Reductions were most significant in adults aged 25-44 and residents of lower-income ZIP codes.
• OPLs with dosage caps below 90 morphine milligram equivalents per day showed the most pronounced effect; duration-only or dosage-only limits did not yield similar results.

Conclusions:

• Comprehensive opioid prescribing limits, especially those including dosage caps, show significant potential in reducing opioid-related adverse health events.
• Policy interventions combining duration and dosage restrictions appear more effective than single-component limits.
• Targeted strategies may be necessary to address disparities observed in younger adults and lower-income populations.