Andrew C. Persch, Alexis Wagner, Mallory Fleming, P. Cristian Gugiu, Stephen J. Page; Ohio Modified Arm–Motor Ability Test (OMAAT): An Optimized Measure of Upper Extremity Functional Limitation in Hemiparetic Stroke. Am J Occup Ther 2018;72(4):7204205030. https://doi.org/10.5014/ajot.2018.025445
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This secondary analysis quantified the psychometric properties of the Ohio Modified Arm–Motor Ability Test (OMAAT) in a sample of neurologically stable chronic stroke survivors (n = 67, 40 men; mean age 59.8 yr, standard deviation = 12.8; 42 White, 23 Black, 2 other; 92.5% right-sided lesion; 44 ischemic stroke). Findings indicate high OMAAT internal consistency (Cronbach’s α = .97, ordinal α = .98, Gugiu’s bootstrap reliability = .97), unidimensionality, and strong positive factor loadings for all 20 OMAAT items. Convergent validity between OMAAT and Action Research Arm Test total scores was strong (r = .90, p < .0001). The OMAAT is the first short measure of upper extremity functional limitation available to clinicians and researchers that includes an administration manual and that has been examined using nonparametric psychometrics. A detailed administration manual is provided as a supplement to this article.
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