North Star Ambulatory Assessment for Duchenne MD

Score the North Star Ambulatory Assessment (NSAA) in ambulatory Duchenne muscular dystrophy patients across 17 functional items to assess disease severity and monitor exon-skipping therapy response.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Score the North Star Ambulatory Assessment (NSAA) in ambulatory Duchenne muscular dystrophy patients across 17 functional items to assess disease severity and monitor exon-skipping therapy response

Each component has a specific meaning:

  • 17 functional items — The 17 functional items recorded for the scenario being assessed.

Note: Interpret the nsaa score result against the thresholds and context described above.

How to Use

Enter the 17 functional items for the scenario you are assessing. Score the North Star Ambulatory Assessment (NSAA) in ambulatory Duchenne muscular dystrophy patients across 17 functional items to assess disease severity and monitor exon-skipping therapy response. Use the nsaa score result to inform your calculation.

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