Using Mahalanobis distance to evaluate recovery in acute stroke

Article

Tehan, Hannah, Witteveen, Kate, Tolan, G. Anne, Tehan, Gerald and Senior, Graeme J.. 2018. "Using Mahalanobis distance to evaluate recovery in acute stroke." Archives of Clinical Neuropsychology. 33, pp. 577-582. https://doi.org/10.1093/arclin/acx107
Article Title

Using Mahalanobis distance to evaluate recovery in acute stroke

ERA Journal ID6101
Article CategoryArticle
AuthorsTehan, Hannah (Author), Witteveen, Kate (Author), Tolan, G. Anne (Author), Tehan, Gerald (Author) and Senior, Graeme J. (Author)
Journal TitleArchives of Clinical Neuropsychology
Journal Citation33, pp. 577-582
Number of Pages6
Year2018
Place of PublicationOxford, United Kingdom
ISSN0887-6177
1873-5843
Digital Object Identifier (DOI)https://doi.org/10.1093/arclin/acx107
Web Address (URL)https://academic.oup.com/acn/article/33/5/577/4604609
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 standardised neuropsychological tests was administered on five or six occasions across a two 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 gerneralised learning deficits thereby identifying likely candidates for further cognitive assessment and rehabilitation.

Keywordsstroke; acute; recovery; Mahalanobis distance
ANZSRC Field of Research 2020320903. Central nervous system
520499. Cognitive and computational psychology not elsewhere classified
Byline AffiliationsAustralian Catholic University
School of Psychology and Counselling
Institution of OriginUniversity of Southern Queensland
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