Abstract
Background: Previous studies have established benchmarks of clinically meaningful decline on neuropsychological tests. However, little is known about meaningful testing benchmarks based on gains in function. Objective: Investigate neuropsychological changes in multiple sclerosis (MS) patients with work gains and calculate benchmarks of meaningful improvement on neuropsychological tests. Methods: A total of 323 people with MS were monitored longitudinally with neuropsychological testing and the Buffalo Vocational Monitoring Survey. Results/Conclusions: Those with work gains showed significant improvement (~3 points) on the Symbol Digit Modalities Test (SDMT) over time, p = 0.01. Benchmarks for clinically meaningful improvement on the SDMT are similar to those previously established for clinically meaningful decline.
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