Abstract WP354: The Rural Health Care Penalty: Urban-rural Disparities in Stroke Center Performance
Goal: To determine hospital and stroke system characteristics associated with higher levels of stroke center performance. Methods: We included all Centers for Medicare and Medicaid Services designated Acute Care Hospitals and Critical Access Centers (ACH/CAC) from January 1, 2005 to December 31, 2014. Higher stroke center performance was defined as earning a performance achievement award (PAA) on a predefined set of 7 evidence-based measures in a national quality program, Get-With-The-Guidelines-Stroke (GWTG-S). Generalized Estimating Equations were used to model characteristics associated with attaining a PAA over nine years of data. Hospital variables included total, ischemic and hemorrhagic stroke discharge volumes; medicaid discharge volume; patient race/ethnicity; ownership; rurality (Truven Health MarketScan); and state and/or national stroke center certification. Stroke system variables included emergency medical service (EMS) stroke routing protocol; stroke center directives (legislation, regulation, or department of health initiatives); and location in a region with a stroke consortium. Results: As a percentage of all ACH/CACs, GWTG-S hospitals with PAA increased significantly over time from 0.001% (5/4530) in 2005 to 24% (1086/4526) in 2014 (linear and nonlinear p’s<0.0001). Variables associated with PAA status at the p<0.05 level were included in the combined analysis. Significant independent predictors of PAA status included urban location (p<0.0001); total (p=0.0016) and ischemic stroke (p<0.0048) discharge volumes; national stroke center designation (p<0.0001); and presence of state stroke center directives (p=0.0012). EMS routing was not statistically significant but there was an EMS-by-time interaction; hospitals with EMS routing had a significantly increased rate of earning PAA (p = 0.0463). Conclusions: There has been rapid improvement in stroke center performance from 2005 to 2014. Urban location, higher hospital discharge volume, national stroke center designation, and state stroke directives are independently associated with better stroke center performance. After controlling for hospital and stroke system factors, there are significant urban-rural disparities in stroke center performance.