Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Discriminative ability of the NDI (left column) and the NRS for neck pain (right column). Mean scores differences were statistically significant P < 0.001 (analysis of variance) between subgroups with cervical radiculopathy and neck pain only (n = 150). NDI indicates Neck Disability Index; NRS, Numerical Rating Scale.
