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)

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 Dawson, Professor Jesse and Walters, Professor Matthew and Quinn, Professor Terry
• Authors: Quinn, T.J., Dawson, J., Walters, M., and Lees, K.R.
• College/School: College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health; College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
• 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