Assessment of the responsiveness of four scales in geriatric patients with chronic neck pain
Clinimetrics: Neck Pain and Disability Scale (NPDS)
Responsiveness and minimal important changes for the Neck Disability Index and the Neck Pain Disability Scale in Italian subjects with chronic neck pain
Development of the Italian version of the Neck Pain and Disability Scale, NPDS-I: cross-cultural adaptation, reliability, and validity
https://pubmed.ncbi.nlm.nih.gov/18520930/Neck Pain and Disability Scale and Neck Disability Index: validity of Dutch language versions
https://pubmed.ncbi.nlm.nih.gov/21814745/Translation and validation study of Chinese versions of the neck disability index and the neck pain and disability scale
https://pubmed.ncbi.nlm.nih.gov/20436379/