hello, David
take a look at the following reference:
Vernon, H and Moir, S
The Neck Disability Index: a study of reliability and validity
in J Manipulative Physiol Ther 1991 14(7)p.409-15
[published erratum appears in J Manipulative Physiol Ther 1992 Jan;15(1):following Table of Contents]
good luck
Paul Enthoven
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|