Arthritis Research and Therapy
The objectives of this study were to develop a functional outcome instrument for hip and knee osteoarthritis research (OA-FUNCTION-CAT) using item response theory (IRT) and computer adaptive test (CAT) methods and to assess its psychometric performance compared to the current standard in the field.
Jette, Alan M.; McDonough, Christine M.; Ni, Pengsheng; and Haley, Stephen M., "A Functional Difficulty and Functional Pain Instrument for Hip and Knee Osteoarthritis" (2009). Open Dartmouth: Faculty Open Access Articles. 511.