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Using mahalanobis distance to evaluate recovery in acute stroke
Tehan, Hannah Witteveen, Kate Tolan, Anne Tehan, Gerald Senior, Graeme J.
Tehan, Hannah
Witteveen, Kate
Tolan, Anne
Tehan, Gerald
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.
Keywords
Cerebrovascular disease, accident and stroke, Executive functions, Practice effects, reliable change, Learning and memory
Date
2018
Type
Journal article
Journal
Archives of Clinical Neuropsychology
Book
Volume
33
Issue
5
Page Range
577-582
Article Number
ACU Department
School of Behavioural and Health Sciences
Faculty of Health Sciences
Faculty of Health Sciences
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled