5Vernon H, Mior S. The Neck Disability Index: A study of reliability and validity[J]. J Manipulative Physiol Ther,1991,14: 409-415.
6Cote P, Cassidy JD, Carroll LJ,et al. The annual incidence and course of neck pain in the general population: a populationbased cohort study[J]. Pain, 2004,112:267-273.
7Ralph E, Timothy J,Madson P, et al. Comparison of the neck disability index and the neck bournemouth questionaire in a sample of patients with chronic uncomplicated neck pain[J], J Manipulative Physiol Ther,2007,30:259-261.
8Wlodyka-Demaille S,Poiraudeau S,Catanzariti JF,et al. French translation and validation of 3 functional disability scales for neck pain[J].Arch Phys Med Rehabil, 2002,83:376-386.
9Ackelman B,Lindgren U. Validity and reliability of a modified version of the neck disability index [J]. J Rehabil Med, 2002,34:284-287.
10Vos CJ,Verhagen AP, Koes BW. Reliability and responsiveness of the Dutch version of the Neck Disability Index in patients with acute neck pain in general practices [J]. Eur Spine J, 2006,15:1729- 1736.