Reliability and validity study of a Thai version of the Neck Disability Index in patients with neck pain.


OBJECTIVE To evaluate the reliability and validity of the Thai version of the neck disability index (NDI) in neck pain patients. MATERIAL AND METHOD The NDI was translated into Thai. The translation strategy used international standards. Forty-six Thai patients with neck pain were included in the present study. Thai version NDI, short form-36 (SF-36) and… (More)


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