Abstract
Objective: We sought to assess whether the proportion of stroke patients who utilized Emergency Medical Services (EMS) has changed over time in a population-based epidemiological study. Methods: Stroke and transient ischemic attack (TIA) patients were identified in a population of 1.3 million in the Cincinnati area from data in 1999, 2005, 2010, and 2015. Patient charts and EMS records were analyzed by research nurses and reviewed by study physicians. This analysis excluded strokes/TIAs that occurred while in a hospital, out of town, during EMS transport, or at unknown location. Patients with unknown EMS utilization, stroke severity, baseline pre-stroke disability, race, stroke type, or under age 18 were excluded. Proportion of EMS utilization by stroke patients was calculated and Cochran-Armitage Trend Test was used to analyze trends in EMS utilization over time. Multivariable logistic regression was used to determine the association between age, race, sex, prior stroke, stroke type, where the stroke occurred, stroke severity, and pre-stroke disability with EMS use. Results: In 1999, 2005, 2010 and 2015, 2968 of 3860, 2900 of 3643, 3010 of 3503, and 3327 of 3767 stroke cases were included, respectively. EMS use by stroke patients did not change significantly over time (52%, 51%, 52%, 53%, p=0.12 for trend). In 1999 and 2015, age, pre-stroke disability, stroke severity, hemorrhagic stroke and stroke occurring at work were significantly associated with EMS use. Race, sex, and prior stroke were not. Slight variation in associations occurred in 2005 and 2010, with stroke at work not reaching significance in 2005 and 2010, and pre-stroke disability not reaching significance in 2005. Conclusion: EMS use by stroke patients in our population did not change from 1999 to 2015. With the recent advances in treatment options for stroke, novel and effective approaches to increase EMS use are warranted.
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