Epidemiology of inpatient stay in Parkinson’s disease in the United States: Insights from the Nationwide Inpatient Sample

Highlights • Our study uses data from the largest publicly available all-payer inpatient care database in the United States. • A total of 3,015,645 admissions of Parkinson’s disease (PD) patients were documented from 2002–2011, with 3.9% resulting in inpatient mortality. • Pneumonia was the most common cause of admission in PD patients, followed by urinary tract infection (UTI) and sepsis. • In PD patients, the incidence of UTI and sepsis is increasing, while for other comorbidities, it is decreasing. • The inflation-adjusted cost of care has been steadily rising from $22,250 per hospitalization in 2002 to $37,942 in 2011.