Robert W Motl1, Erin M Snook. 1. Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. robmotl@uiuc.edu
Abstract
OBJECTIVE: The Multiple Sclerosis Walking Scale-12 (MSWS-12) is a 12-item patient-rated measure of the impact of MS on walking. As validation of scores from a measure is an ongoing and evolving process, the provision of additional evidence is warranted that confirms and extends the validity of inferences from scores on the MSWS-12. METHOD: Participants (N=133) were recruited through support group meetings of the Greater Illinois and Indiana State Chapters of the National Multiple Sclerosis Society, and wore an accelerometer for a seven-day period and completed the MSWS-12 and other outcome measures. RESULTS: Confirmatory factor analysis indicated that a single-factor model provided an adequate fit for MSWS-12 scores. MSWS-12 scores demonstrated strong evidence of internal consistency. The correlations between MSWS-12 scores with scores from other scales, including an accelerometer, were consistent with our a priori hypotheses. CONCLUSION: We provide evidence that both confirms and extends the validity of inferences from scores of the MSWS-12 as a measure of the impact of MS on walking in a community-based sample of individuals with MS.
OBJECTIVE: The Multiple Sclerosis Walking Scale-12 (MSWS-12) is a 12-item patient-rated measure of the impact of MS on walking. As validation of scores from a measure is an ongoing and evolving process, the provision of additional evidence is warranted that confirms and extends the validity of inferences from scores on the MSWS-12. METHOD:Participants (N=133) were recruited through support group meetings of the Greater Illinois and Indiana State Chapters of the National Multiple Sclerosis Society, and wore an accelerometer for a seven-day period and completed the MSWS-12 and other outcome measures. RESULTS: Confirmatory factor analysis indicated that a single-factor model provided an adequate fit for MSWS-12 scores. MSWS-12 scores demonstrated strong evidence of internal consistency. The correlations between MSWS-12 scores with scores from other scales, including an accelerometer, were consistent with our a priori hypotheses. CONCLUSION: We provide evidence that both confirms and extends the validity of inferences from scores of the MSWS-12 as a measure of the impact of MS on walking in a community-based sample of individuals with MS.
Authors: Stina Bladh; Maria H Nilsson; Gun-Marie Hariz; Albert Westergren; Jeremy Hobart; Peter Hagell Journal: J Neurol Date: 2011-09-29 Impact factor: 4.849
Authors: Myla D Goldman; Robert W Motl; John Scagnelli; John H Pula; Jacob J Sosnoff; Diego Cadavid Journal: Neurology Date: 2013-10-30 Impact factor: 9.910
Authors: Myla D Goldman; Melanie D Ward; Robert W Motl; David E Jones; John H Pula; Diego Cadavid Journal: Mult Scler Date: 2016-12-07 Impact factor: 6.312
Authors: Matthew M Engelhard; Karen M Schmidt; Casey E Engel; J Nicholas Brenton; Stephen D Patek; Myla D Goldman Journal: Qual Life Res Date: 2016-06-24 Impact factor: 4.147