Spine · 2010 · 97 citations · 21 references
The derived Korean version of the NDI was found to be a reliable and valid instrument for measuring disability in Korean patients with cervical problems. The authors recommend its use in future Korean clinical studies.
21
The Neck Disability Index: a study of reliability and validity.
Howard Vernon, Silvano Mior · PubMed · 1991 · 3.1K citations
Neck Pain in the General Population
Gunnar Bovim, H. Schrader, Trond Sand · Spine · 1994 · 675 citations
Development of the Neck Pain and Disability Scale
Anthony H. Wheeler, Paula Goolkasian, Audrey C. Baird et al. · Spine · 1999 · 306 citations