Reliability of the modified Rankin Scale: a systematic review

Quinn, T.J. , Dawson, J. , Walters, M. and Lees, K.R. (2009) Reliability of the modified Rankin Scale: a systematic review. Stroke, 40(10), pp. 3393-3395. (doi:10.1161/STROKEAHA.109.557256)

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Publisher's URL: http://dx.doi.org/10.1161/STROKEAHA.109.557256

Abstract

<p><b>Background and Purpose:</b> A perceived weakness of the modified Rankin Scale is potential for interobserver variability. We undertook a systematic review of modified Rankin Scale reliability studies.</p> <p><b>Methods:</b> Two researchers independently reviewed the literature. Crossdisciplinary electronic databases were interrogated using the following key words: Stroke*; Cerebrovasc*; Modified Rankin*; Rankin Scale*; Oxford Handicap*; Observer variation*. Data were extracted according to prespecified criteria with decisions on inclusion by consensus.</p> <p><b>Results:</b> From 3461 titles, 10 studies (587 patients) were included. Reliability of modified Rankin Scale varied from weighted κ=0.95 to κ=0.25. Overall reliability of mRS was κ=0.46; weighted κ=0.90 (traditional modified Rankin Scale) and κ=0.62; weighted κ=0.87 (structured interview).</p> <p><b>Conclusion:</b> There remains uncertainty regarding modified Rankin Scale reliability. Interobserver studies closest in design to large-scale clinical trials demonstrate potentially significant interobserver variability.</p>

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lees, Professor Kennedy and Quinn, Dr Terence and Dawson, Professor Jesse and Walters, Professor Matthew
Authors: Quinn, T.J., Dawson, J., Walters, M., and Lees, K.R.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences
Journal Name:Stroke
Publisher:American Heart Association
ISSN:0039-2499
ISSN (Online):1524-4628
Copyright Holders:Copyright © 2009 American Heart Association
First Published:First published in Stroke 40(10):3393-3395
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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