Validity of Scores From the 12-Item Multiple Sclerosis Walking Scale Among Young, Middle-Aged, and Older Adults With Multiple Sclerosis.
Robert W Motl, Petra Šilić, Trinh L T Huynh and 1 others
PMID 41067373WHAT IT FOUND
The 12-item Multiple Sclerosis Walking Scale accurately reflects walking ability in older adults with MS, not just younger ones.
Scores tracked closely with timed walk tests and endurance measures across all ages, and cognitive decline did not distort the results.
Key findings
01MSWS-12 scores worsened with age in a pattern that matched the worsening seen in three objective walking performance tests (timed 25-foot walk, 6-minute walk, and timed up and go).
02The MSWS-12 showed strong associations with walking performance tests but only weak or moderate associations with neurocognitive tests, confirming it measures walking rather than general health or cognition.
03The link between MSWS-12 scores and walking performance remained strong even after statistically controlling for neurocognitive function, indicating that cognitive status does not bias the scale's results.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study was cross-sectional, meaning it compared different people of different ages at one time. It did not follow individuals over time, so it cannot confirm that the MSWS-12 accurately detects changes in an individual's walking ability as they age or as their disease progresses. The analysis did not account for other factors that might influence walking or self-perception, such as fatigue, pain, medication side effects, or other health conditions. There was no control group of people without MS, which the authors argue is appropriate because the scale is specific to MS symptoms, but it limits direct comparison to general population norms.
Declared interests
The research was supported by the National Institutes of Health (Extramural). The authors declared no conflicts of interest.
The easy way to misread this
Do not assume the MSWS-12 is validated for detecting change within an individual patient over time. This study only showed that scores differ between age groups at a single point in time; it did not test whether the scale accurately reflects improvement or decline in a specific person following an intervention.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →