Advanced

Psychometric performance of a generic walking scale (Walk-12G) in multiple sclerosis and Parkinson's disease.

Jonasson, Stina LU ; Nilsson, Maria H LU ; Hariz, Gun-Marie; Westergren, Albert LU ; Hobart, Jeremy and Hagell, Peter LU (2012) In Journal of Neurology 259(Sep 29). p.729-738
Abstract
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.... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Neurology
volume
259
issue
Sep 29
pages
729 - 738
publisher
Steinkopff
external identifiers
  • WOS:000302489400018
  • PMID:21956376
  • Scopus:84862530943
ISSN
1432-1459
DOI
10.1007/s00415-011-6254-z
language
English
LU publication?
yes
id
a93a07b0-2d5d-4e41-822e-b04da9467108 (old id 2201022)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/21956376?dopt=Abstract
date added to LUP
2011-11-01 16:02:05
date last changed
2016-10-13 04:25:55
@misc{a93a07b0-2d5d-4e41-822e-b04da9467108,
  abstract     = {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 (&lt;5% missing item responses) and tests of scaling assumptions supported summing item scores to a total score (corrected item-total correlations &gt;0.6). Coefficient alpha and test-retest reliabilities were &gt;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.},
  author       = {Jonasson, Stina and Nilsson, Maria H and Hariz, Gun-Marie and Westergren, Albert and Hobart, Jeremy and Hagell, Peter},
  issn         = {1432-1459},
  language     = {eng},
  number       = {Sep 29},
  pages        = {729--738},
  publisher    = {ARRAY(0xa2c9158)},
  series       = {Journal of Neurology},
  title        = {Psychometric performance of a generic walking scale (Walk-12G) in multiple sclerosis and Parkinson's disease.},
  url          = {http://dx.doi.org/10.1007/s00415-011-6254-z},
  volume       = {259},
  year         = {2012},
}