ACA dependent coverage extension and young adults' substance-associated ED visits

Area of Science:

• Public Health
• Health Services Research
• Substance Use Disorders

Background:

• The Affordable Care Act (ACA) expanded health insurance coverage, including dependent coverage up to age 26.
• Young adults are a critical demographic for substance use disorder (SUD) interventions.
• Understanding the ACA's impact on SUD-related healthcare utilization is crucial for public health policy.

Purpose of the Study:

• To investigate the impact of the ACA's dependent coverage provision on substance use disorder-associated emergency department (ED) visits among young adults.
• To analyze changes in opioid- and alcohol-associated ED visits and inpatient admissions before and after ACA implementation.

Main Methods:

• A quasi-experimental study design using Nationwide Emergency Department Sample data from 2007-2019.
• Difference-in-differences analysis comparing young adults aged 23-25 (treatment) with those aged 27-29 (comparison).
• Generalized linear models estimated adjusted odds ratios (ORs) with 95% confidence intervals (CIs) to assess ACA's effects on healthcare utilization.

Main Results:

• Alcohol-associated ED visits significantly declined more in the treatment group post-ACA (OR, 0.841; 95% CI, 0.828-0.855).
• No significant changes were observed in opioid-associated ED visits between the treatment and comparison groups.
• Inpatient admissions for both alcohol- and opioid-associated visits showed no significant changes between the groups.

Conclusions:

• The ACA demonstrated mixed effects on substance-associated healthcare utilization among young adults.
• Reduced alcohol-related ED visits suggest a positive impact, while unchanged opioid-related ED visits and inpatient admissions indicate areas needing further intervention.
• Continued monitoring and research into state-level variations are essential for addressing substance use disorder public health challenges.