Using mahalanobis distance to evaluate recovery in acute stroke

Journal article

Tehan, Hannah, Witteveen, Kate, Tolan, Anne, Tehan, Gerald and Senior, Graeme J.. (2018). Using mahalanobis distance to evaluate recovery in acute stroke. Archives of Clinical Neuropsychology. 33(5), pp. 577 - 582. https://doi.org/10.1093/arclin/acx107
AuthorsTehan, Hannah, Witteveen, Kate, Tolan, Anne, Tehan, Gerald and Senior, Graeme J.
Abstract

Objective In the weeks immediately following a stroke, impairments across multiple cognitive domains are pervasive yet there is little literature that explores cognitive recovery during this period. This paper evaluates the use of Mahalanobis distance as a means of statistically evaluating cognitive change at the individual level. Method A small battery of standardized neuropsychological tests was administered on five or six occasions across a 2-week period to the participants recovering from a stroke and a non-stroke control group. Mahalanobis distance was used to evaluate the change profile of those who were recovering from a stroke relative to the non-stroke control. Results The outcomes of three patients show that Mahalanobis distance could statistically differentiate recovery, no change, and deterioration from normal repetition effects. Discussion In the acute phase of stroke using Mahalanobis distance it is possible to distinguish between recovery, normal learning, and gerneralized learning deficits thereby identifying likely candidates for further cognitive assessment and rehabilitation.

KeywordsCerebrovascular disease; accident and stroke; Executive functions; Practice effects; reliable change; Learning and memory
Year2018
JournalArchives of Clinical Neuropsychology
Journal citation33 (5), pp. 577 - 582
PublisherOxford University Press
ISSN1873-5843
Digital Object Identifier (DOI)https://doi.org/10.1093/arclin/acx107
Scopus EID2-s2.0-85055488367
Page range577 - 582
Publisher's version
File Access Level
Controlled
Place of publicationUnited Kingdom
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