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Psychometric performance of a generic walking scale (Walk-12G) in multiple sclerosis and Parkinson's disease
Department of Health Sciences, Lund University, Lund, Sweden.
Department of Health Sciences, Lund University, Lund, Sweden.
Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden.
Högskolan Kristianstad, Sektionen för hälsa och samhälle, Avdelningen för Hälsovetenskap. Högskolan Kristianstad, Forskningsmiljön PRO-CARE.ORCID-id: 0000-0003-4820-6203
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2012 (Engelska)Ingår i: Journal of Neurology, ISSN 0340-5354, E-ISSN 1432-1459, Vol. 259, nr 4, s. 729-738Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Walking difficulties are common in neurological and other disorders, as well as among the elderly. There is a need for reliable and valid instruments for measuring walking difficulties in everyday life since existing gait tests are clinician rated and focus on situation specific capacity. The Walk-12G was adapted from the 12-item multiple sclerosis walking scale as a generic patient-reported rating scale for walking difficulties in everyday life. The aim of this study is to examine the psychometric properties of the Walk-12G in people with multiple sclerosis (MS) and Parkinson’s disease (PD). The Walk-12G was translated into Swedish and evaluated qualitatively among 25 people with and without various neurological and other conditions. Postal survey (MS, n = 199; PD, n = 189) and clinical (PD, n = 36) data were used to test its psychometric properties. Respondents considered the Walk-12G relevant and easy to use. Mean completion time was 3.5 min. Data completeness was good (<5% missing item responses) and tests of scaling assumptions supported summing item scores to a total score (corrected item-total correlations >0.6). Coefficient alpha and test–retest reliabilities were >0.9, and standard errors of measurement were 2.3–2.8. Construct validity was supported by correlations in accordance with a priori expectations. Results are similar to those with previous Walk-12G versions, indicating that scale adaptation was successful. Data suggest that the Walk-12G meets rating scale criteria for clinical trials, making it a valuable complement to available gait tests. Further studies involving other samples and application of modern psychometric methods are warranted to examine the scale in more detail.

Ort, förlag, år, upplaga, sidor
2012. Vol. 259, nr 4, s. 729-738
Nyckelord [en]
Multiple sclerosis, Outcome assessment, Parkinson’s disease, Psychometrics, Walking
Nationell ämneskategori
Neurologi
Identifikatorer
URN: urn:nbn:se:hkr:diva-8545DOI: 10.1007/s00415-011-6254-zISI: 000302489400018PubMedID: 21956376OAI: oai:DiVA.org:hkr-8545DiVA, id: diva2:441409
Tillgänglig från: 2011-09-15 Skapad: 2011-09-15 Senast uppdaterad: 2017-12-08Bibliografiskt granskad

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Westergren, AlbertHagell, Peter

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