Abstract
The modified American Shoulder and Elbow Surgeon’s (M-ASES) questionnaire is purported to be a non-region specific functional measure of the entire upper extremity. The purpose of this study was to determine the factor structure of the M-ASES and to determine item-fit of the M-ASES using item response theory (IRT). Analyses included univariate baseline demographics, factor analysis, convergent/construct validation with the SF-12, and graded response IRT of the M-ASES. 964 patients of an orthopedic practice with a variety of upper extremity dysfunctions participated in this trial. The M-ASES demonstrated two dimensions (wrist/hand and shoulder dysfunction) and exhibited excellent discrimination and threshold specification. The instrument correlated well with the mental and physical dimensions of the SF-12. The M-ASES should be considered an excellent tool for measure of whole upper extremity dysfunction.
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Cook, C., Hegedus, E., Goode, A. et al. Relative validity of the modified American Shoulder and Elbow Surgeons (M-ASES) questionnaire using item response theory. Rheumatol Int 28, 217–223 (2008). https://doi.org/10.1007/s00296-007-0420-8
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DOI: https://doi.org/10.1007/s00296-007-0420-8