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What does NSAA Improvement mean in Duchenne (DMD)?

NSAA Improvement is a Duchenne (DMD) functional assessment term, explained for patients, families, and caregivers.

Category: NSAA and Functional Assessment Terminology

NSAA Improvement

An increase in the NSAA total score compared with an earlier assessment. Such a change may reflect improved performance or the acquisition of motor abilities, particularly in younger children, but it should be interpreted alongside age-related development, measurement variability, and other outcomes.

Updated November 3, 2026

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