[Validation of a Spanish version of the Neck Disability Index].
Andrade Ortega Juan Alfonso, Delgado Martínez Alberto Damián, Almécija Ruiz Remedios·Medicina clinica
BACKGROUND AND OBJECTIVE: The Neck Disability Index (NDI) is the most used scale for neck pain and disability. There is no validated Spanish version so far. This prospective study's objective was to evaluate a Spanish version's comprehension and metrics characteristics. MATERIAL AND METHOD: The Spanish version of the…