The Foot Function Index for Measuring Rheumatoid Arthritis Pain: Evaluating Side-to-Side Reliability

摘要: The Foot Function Index is a validated and reliable instrument for measuring foot pain, disability, activity restriction in patients with rheumatoid arthritis. For the purposes of orthopaedic studies which one serves as an internal control, we assessed side-to-side reliability seven-question pain subscale. Thirty arthritis completed visual analog scale questionnaires both feet on two occasions 8 days apart. Internal was high, Cronbach's alphas ranging from 0.94 to 0.98, suggesting good left versus right discriminatory abilities. Principal component factor analysis segregated questions into large clusters containing predominately either or items. Intraclass correlation coefficients were examined test-retest (separated by side) day test). resultant intraclass nearly equivalent...