Recent trends in inpatient mortality and resource utilization for patients with stroke in the United States: 2005-2009

Abstract

Background: The aim of the study is to evaluate recent trends in mortality, length of stay, costs, and charges for patients admitted to the US hospitals with the principal diagnosis of stroke. Methods: This was a retrospective temporal trends study using data from the Nationwide Inpatient Sample from 2005 to 2009. Results: During the study period, there were 2.7 million hospital admissions with the diagnosis of stroke in the United States (470,000 intracerebral hemorrhage, 130,000 subarachnoid hemorrhage, and 2.1 million ischemic strokes). In-hospital mortality decreased from 10.2% in 2005 to 9.0% in 2009 (26.0%-23.0%, 23.4%-23.1%, and 6.0%-5.1% for the stroke subtypes, respectively), the average length of stay decreased from 6.3 days to 5.9 days (5.6-5.2 days for ischemic stroke, remained the same for hemorrhagic stroke), and the average number of 1.3 ± 0.1 procedures per admission remained the same. The proportion of patients with major or extreme severity of illness increased from 39.2% to 47.0% (P