Abstract P721: Parkinson’s Disease Patients With Ischemic Stroke Have Shorter Hospital Stay Compared to Those Without Parkinson’s Disease: A National Inpatient Sample Study 1998-2017

Abstract

Introduction: A paucity of studies exists about the influence of Parkinson’s Disease (PD) in the length of stay (LOS) among patients admitted with acute ischemic stroke (AIS). We seek to identify if a prior history of PD impacts the LOS of AIS patients, and to establish the factors associated it. Methodology: We analyzed data of the NIS from the Healthcare Cost and Utilization Project (HCUP) from 1998 to 2017, using a negative binomial regression to assess sociodemographic factors and hospital characteristics associated with LOS in AIS patients with PD. Results: A total of 835,380,672 hospitalizations were identified with discharge diagnosis of AIS. The cohort was divided into 2 groups based on presence of history of PD during the same admission. 12,799,437 of AIS patients had discharge records with a secondary diagnosis of PD. Non-Parkinson’s disease cohort had longer hospital stay (Incidence Rate Ratio IRR 1.02 (95% CI 1.01-1.03). An increased LOS was observed in males compared to females (IRR 1.03 (1.00-1.03)); Black (IRR 1.17 (95% CI 1.16-1.18)), Hispanics (IRR 1.13 (95% CI 1.11-1.14)) and Asians (IRR 1.22 (95% CI 1.19-1.26)) when compared to whites, Medicaid when compared to Medicare (IRR 1.37 (95% CI 1.34-1.41)). Higher Elixhauser index corresponded to longer LOS (IRR 1.14 (CI 1-14-1.14)). In terms of hospital factors, Urban teaching hospital was associated with longer LOS when compared to rural hospital (IRR 1.18 (95% CI 1.16-1.19)), Northeast compared to West region hospital areas (IRR 1.3 (95% CI 1.27-1.33)). Decreasing LOS was seen over the course of last 20 years. Conclusion: Admission for ischemic stroke tended to result in longer length of stay among non-Parkinson’s patients. Patient characteristics are a greater source of variability in length of stay than Parkinson’s disease status.