Orthopedics
Neck Disability Index (NDI)
Measures patient-reported disability and functional limitation from neck pain.
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Parameters
Neck Disability Index (NDI) Result
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Formula
Neck Disability Index (%) = (Sum of 10 Section Scores / 50) × 100Clinical Pearls
The benchmark outcome measure required in clinical trials and clinical practice to quantify cervical spine disability and track rehabilitation progress.
Limitations
A minimum clinically important difference (MCID) of at least 5 points (10 percentage points) is needed to show meaningful clinical change.