Paced visual serial addition test in multiple sclerosis.

Area of Science:

• Neuroscience
• Clinical Psychology
• Rehabilitation Medicine

Background:

• The Paced Auditory Serial Addition Test (PASAT) is a key cognitive assessment in Multiple Sclerosis (MS).
• Patient tolerance for the PASAT is a significant concern, leading to interest in alternative assessments.
• The Paced Visual Serial Addition Test (PVSAT) offers a visually presented alternative.

Purpose of the Study:

• To evaluate the interchangeability of the PVSAT and PASAT for cognitive function assessment in MS.
• To determine if PVSAT can be reliably substituted for PASAT within the Multiple Sclerosis Functional Composite (MSFC).

Main Methods:

• Twenty-one healthy controls and 50 MS patients were tested using both PASAT and PVSAT (2-second and 3-second versions).
• Participants also completed other MSFC subtests (Nine-Hole Pegboard Test, Timed 25-Foot Walk Test).
• Correlations between PASAT and PVSAT scores, and their impact on MSFC scores, were analyzed.

Main Results:

• High correlations were observed between PASAT-3 and both PVSAT-3 and PVSAT-2.
• MSFC scores calculated using PVSAT (2- and 3-second versions) showed high correlation with those derived from PASAT-3.
• This indicates strong agreement between the visual and auditory test formats.

Conclusions:

• The PVSAT demonstrates high interchangeability with the PASAT for cognitive evaluation in MS.
• PVSAT can serve as a viable and potentially better-tolerated alternative to PASAT within the MSFC.
• These findings support the use of PVSAT in clinical settings for MS cognitive assessment.