Investigation for Factors Affecting Body Perception Disturbance in Patients with Low Back Pain by Mechanism-Based Classification of Pain: A Cross-Sectional Study

Table 2

Demographic data in each group.

	NP (n = 66)	PNP (n = 36)	CSP (n = 15)	d	r	values
Gender (M/F)	30/36	20/16	7/8	2		0.549
Age (years)	42.7 ± 10.3	48.7 ± 12.2	52.3 ± 6.6	2		≤0.001
Height (cm)	163.8 ± 21.1	165.1 ± 7.4	164.0 ± 7.1	2		0.918
Weight (kg)	62.7 ± 13.7	64.1 ± 12.2	67.3 ± 13.4	2		0.496
BMI (kg/m^2)	22.7 ± 3.3	23.4 ± 3.7	24.9 ± 4.4	2		0.348
Duration (days)	151.9 ± 485.8	34.8 ± 38.6	249.9 ± 485.6	2	0.11	0.546
VAS (cm)	5.0 ± 2.4	5.4 ± 2.3	6.0 ± 1.9	2	0.26	0.214
RDQ	6.9 ± 5.4	8.8 ± 5.3	9.7 ± 4.8	2	0.46	0.040

Mean ± standard deviation (SD). BMI: body mass index; VAS: visual analogue scale; RDQ: Roland-Morris disability questionnaire NP: nociceptive pain; PNP: peripheral neuropathic pain; CSP: central sensitization pain. : Statistically significant.