The e-MSWS-12: improving the multiple sclerosis walking scale using item response theory

• Published in: Quality of life research Vol. 25; no. 12; pp. 3221 - 3230
• Main Authors: Engelhard, Matthew M., Schmidt, Karen M., Engel, Casey E., Brenton, J. Nicholas, Patek, Stephen D., Goldman, Myla D.
• Format: Journal Article
• Language: English
• Published: Cham Springer 01.12.2016; Springer International Publishing; Springer Nature B.V
• Subjects: Adult; Aged; Aged, 80 and over; Clinical outcomes; Dimensionality; Disabilities; Disability; Disability Evaluation; Discriminant analysis; Disease models; Female; Humans; INSTRUMENT DEVELOPMENT; Item response theory; Male; Medicine; Medicine & Public Health; Middle Aged; Multiple sclerosis; Multiple Sclerosis - therapy; Neurology; Physical fitness; Psychometrics; Public Health; Quality of life; Quality of Life Research; Sickness Impact Profile; Sociology; Standard error of estimate; Standard error of measurement; Test bias; Three dimensional modeling; Walking; Walking - physiology; Multiple sclerosis; Differential item functioning; Graded response model; 12-Item multiple sclerosis walking scale; Item response theory; Timed 25-foot walk

Background The Multiple Sclerosis Walking Scale (MSWS-12) is the predominant patient-reported measure of multiple sclerosis (MS) -elated walking ability, yet it had not been analyzed using item response theory (IRT), the emerging standard for patient-reported outcome (PRO) validation. This study aim...