Multiple Sclerosis (MS) is a disease with a wide-ranging impact on functional status, often quantified using the Multiple Sclerosis Functional Composite Score (MSFCS). The MSFCS includes the standardized Z-scores of three functional tests: the Paced Auditory Serial Addition Test (PASAT-3”) for cognitive function, 9-Hole Peg Test (9-HPT) for arm function, and timed 25-foot walk (25-TW) for leg function.