Document Detail

A psychometric evaluation of the Arm Motor Ability Test.
MedLine Citation:
PMID:  23532275     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To further examine the psychometric properties of a 9-item version of the Arm Motor Ability Test (AMAT-9) in persons with stroke.
SUBJECTS: Thirty-two community-dwelling persons > 6 months post-stroke undergoing robotics treatment (mean age = 56.0 years, time post-stroke = 4.1 years, National Institutes of Health Stroke Scale score = 4.1, and AMAT-9 score = 1.22).
METHODS: Construct validity (including Rasch analyses) used baseline data prior to treatment (n = 32). Standardized response mean was calculated for subjects completing the protocol (n = 29). The Wolf Motor Function Test (WMFT), Fugl-Meyer Assessment (FMA), Action Research Arm Test (ARAT), and Stroke Impact Scale (SIS) were also administered.
RESULTS: Spearman-rank correlation coefficients between AMAT-9 and the WMFT, FMA, and ARAT were strong (0.78-0.79, all p < 0.001). The correlation between the AMAT-9 and SIS Hand Function sub-score was stronger than that between the AMAT-9 and the Communication sub-score (0.40, p = 0.025 and -0.16, p = 0.39, respectively). Rasch analyses provided evidence for an appropriate hierarchical structure of item difficulties, unidimensionality, and good reliability. The AMAT demonstrated a comparable standardized response mean of 0.98.
CONCLUSIONS: The AMAT-9 is valid and responsive among subjects scoring in the lower range of the scale. It has the advantage of assessing function and by eliminating the standing item from the previous iteration, it may be more easily used with severely impaired patients.
Michael W O'Dell; Grace Kim; Lisa Rivera; Robert Fieo; Paul Christos; Caitlin Polistena; Kerri Fitzgerald; Delia Gorga
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Journal of rehabilitation medicine     Volume:  45     ISSN:  1651-2081     ISO Abbreviation:  J Rehabil Med     Publication Date:  2013 Jun 
Date Detail:
Created Date:  2013-06-24     Completed Date:  2013-11-11     Revised Date:  2014-06-10    
Medline Journal Info:
Nlm Unique ID:  101088169     Medline TA:  J Rehabil Med     Country:  Sweden    
Other Details:
Languages:  eng     Pagination:  519-27     Citation Subset:  IM    
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MeSH Terms
Aged, 80 and over
Arm / physiopathology
Disability Evaluation*
Middle Aged
Outcome Assessment (Health Care) / methods*
Psychometrics / instrumentation*
Recovery of Function / physiology
Reproducibility of Results
Statistics, Nonparametric
Stroke / physiopathology*,  rehabilitation*
United States
Upper Extremity / physiopathology*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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