Figure 3
From: A functional difficulty and functional pain instrument for hip and knee osteoarthritis
Comparison of the OA-FUNCTION-CAT item banks and WOMAC reliability estimates across the continuum of scale scores. (a) OA-FUNCTION-CAT functional difficulty item bank and WOMAC physical function scale. (b) OA-FUNCTION-CAT functional pain item bank and WOMAC pain scale. CAT, computer adaptive test; OA, osteoarthritis; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.