Abstract 185: Trends in Care Delivery and Outcomes for Acute Stroke and Transient Ischemic Attacks Among Rural and Urban Medicare Beneficiaries, 2008-2017

Abstract

Introduction: Over the last decade substantial investments have been made in implementing stroke systems of care to improve access and quality of care. We sought to determine if these interventions have narrowed the rural-urban disparities in care over time for patients with acute stroke or transient ischemic attack (TIA). Methods: Descriptive observational study using data from all traditional Medicare beneficiaries in the United States from 2008-17 who presented to a hospital emergency department and were admitted either under observation stay or inpatient admission. Patients were classified as rural or urban based on home zip code. The main outcomes were rates of presentation to a certified stroke center, neurology consultation during admission, IV altepase, 90-day mortality, days living independently in the first 90 days post stroke, and 90-day spending. Results: We identified 3.31 million hospital stays for TIA and stroke in the study period. Rural and urban patients had similar age, race, gender, Medicaid status and presence of chronic conditions. In 2008, 24.4% and 60.4% of rural and urban patients respectively were cared for at a certified stroke center (disparity -36.1%). By 2017 this disparity had narrowed by 8.6% points (95% CI 6.6%,10.7%) (Fig). Between 2008 and 2017, the disparity in neurologist evaluation during admission narrowed by 7.4% (5.2%, 9.6%). However, there was no substantive change in disparity in alteplase use -0.1% (95% CI -0.5%,0.3%), mortality at 90 days 0.4% (95% CI 0.1%, 0.7%), or days living independently within 90 days -0.7 days (95% CI -1.1, 0.2). Spending in the first 90 days differentially increased among rural patients by $867 (95% CI 85, 1649). Conclusions: In the last decade, rural residents are more likely to receive care at a certified stroke center and receive neurologist consultation. However, disparities in outcomes are persistent, highlighting more work is needed to equitably extend stroke expertise to all Americans.