Figure 1From: Does a dose-response relation exist between spinal pain and temporomandibular disorders? Spinal pain as independent variable: Prevalence of TMD symptoms and headaches. Prevalence of frequent symptoms in the jaw-face region and headaches among subjects without spinal pain (SP-0), SP-1 subjects with infrequent spinal pain, SP-2 subjects with frequent spinal pain and SP-3 subjects with disabling spinal pain and attending a vocational rehabilitation programme.Back to article page