Abstract
Background and Purpose: Previously a downward trend in stroke related in-hospital mortality was noted from 1996 to 2006 reflecting advancements in acute stroke care. Given ongoing improvement in acute stroke care models and therapies, our study assessed nationwide patterns in in-hospital mortality related to acute stroke for next decade. Methods: Patients with acute stroke were identified from the nationwide in-patient sample database for the years 2007 to 2014 using International Classification of Diseases, Ninth Revision procedure codes. Time trends in the proportion of stroke hospitalizations that resulted in death were assessed. Results: Between 2007 and 2014, overall stroke hospitalizations increased from 1017 414 in 2007 to 2008 to 1114 960 in 2013 to 2014, whereas percentage stroke hospitalizations that resulted in death decreased from 8.98% in 2007-2008 to 7.34% in 2013-2014 (P<0.0001). Unadjusted Odds of mortality decreased regardless of stroke type: ischemic stroke (IS) (OR 0.798, 95% CI 0.762 to 0.835), subarachnoid hemorrhage (SAH) (OR 0.885, 95% CI 0.810 to 0.968), and intracerebral hemorrhage (ICH) (OR 0.865, 95% CI 0.824 to 0.908). In multivariate analysis these odds remained significant (IS: OR 0.813, 95% CI 0.770 to 0.859), SAH: OR 0.680, 95% CI 0.611 to 0.757, ICH: OR 0.707, 95% CI 0.664to 0.754) after adjusting with age, gender, race, medical comorbidities, in-hospital complications, insurance status and APRDRG Severity scale). Conclusions: There is continued decline in Nationwide In-Hospital Mortality among hospitalized acute stroke patients. This reflects ongoing improvement in stroke care models and advancement in therapies.
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