- The NPI has established reliability and validity.
- The NPI is available in multiple languages for studies in may countries.
- NPI profiles are available for many neurologic disorders.
- The NPI has served as an outcome measure in many pharmacologic and nonpharmacologic intervention studies.
- The NPI has been used to study brain-behavior relationships in dementia syndromes with autopsy findings and neuroimaging assessments.
- The NPI has an integrated caregiver distress measure to demonstrate the effect of behavior on caregivers.