Stroke; a journal of cerebral circulation
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Letter Review Meta Analysis
Reliability of the modified Rankin Scale: a systematic review.
A perceived weakness of the modified Rankin Scale is potential for interobserver variability. We undertook a systematic review of modified Rankin Scale reliability studies. ⋯ There remains uncertainty regarding modified Rankin Scale reliability. Interobserver studies closest in design to large-scale clinical trials demonstrate potentially significant interobserver variability.