Tissue Stiffness is Not Related to Pain Experience: An Individually Controlled Study in Patients with Chronic Neck and Back Pain

Table 1

Description of included patients.

	Neck pain (n = 20)	Low back pain (n = 20)	Total (n = 40)
Age (years ± SD)	49.1 ± 7.8	47.4 ± 9.9	48.3 ± 8.8
Gender (male/female %)	10/90	35/65	22.5/77.5
Body mass index (kg/m^2 ± SD)	26.2 ± 4.6	22.2 ± 2.2	24.2 ± 4.1
Duration of symptoms (months ± SD)	129 ± 169	85 ± 118	107 ± 141
Baseline NDI (points; range)	18 (15–27)
Baseline ODI (points; range)		16 (14–18)
Pressure in the cupping glass (mbar ± SD)	274 ± 34	281 ± 27	278 ± 31

SD = standard deviation.