Introduction [edit | edit source]. The Modified Rankin Scale (mRS) which was originally the Rankin Scale developed by Dr. John Rankin in 1957, and was modified to the Modified Rankin Scale by Charles Warlow and others as part of the UK-TIA (United Kingdom Transient Ischaemic Attack) trial in the 1980s. The mRS is a 6-level ordinal categorical scale outcome measure used primarily to classify ... More @Wikipedia
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