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Comparison of 90-day case-fatality after ischemic stroke between two different stroke outcome registries using propensity score matching analysis
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2011 (English)In: Acta Neurologica Scandinavica, ISSN 0001-6314, E-ISSN 1600-0404, Vol. 123, no 5, 325-331 p.Article in journal (Refereed) Published
Abstract [en]

Background - It has not been clarified whether the disparity in ischemic stroke outcome between populations is caused by ethnic and geographic differences or by variations in case mix. Propensity score matching (PSM) analysis can overcome some analytical problems but is rarely used in stroke outcome research. This study was to compare the ischemic stroke case-fatality between two PSM cohorts of Sweden and Korea. Methods - Prognostic variables related to baseline characteristics and stroke care were included in our PSM model. Then, we selected 7675 Swedish and 1220 Korean patients with ischemic stroke from each stroke registers and performed one-to-one matching based on propensity scores of each patient. Results - After PSM, all measured variables were well balanced in 1163 matched subjects, and the 90-day case-fatality was identical 6.2% (HR 0.997, 95%CI 0.905-1.099) in Sweden and Korea. Conclusions - No difference is found in the 90-day case-fatality in propensity score-matched Swedish and Korean patients with ischemic stroke.

Place, publisher, year, edition, pages
2011. Vol. 123, no 5, 325-331 p.
Keyword [en]
ischemic stroke, case-fatality, stroke register, propensity score matching
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-151914DOI: 10.1111/j.1600-0404.2010.01406.xISI: 000288755800004PubMedID: 21426306OAI: oai:DiVA.org:uu-151914DiVA: diva2:411609
Available from: 2011-04-19 Created: 2011-04-19 Last updated: 2011-04-19Bibliographically approved

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