The Pain Intensity/Quality and Pain Site Association with Muscle Activity and Muscle Activity Distribution in Patients with Chronic Low Back Pain: Using a Generalized Linear Mixed Model Analysis

Table 3

GLMM regression results for relationship between the distance between the centroid of muscle activity and pain site and pain intensity/quality.

Model	Variables	Estimate	Lower CI	Upper CI	Rhat
SFMPQ-2 subclass	Continuous pain	0.46	−0.13	1.03	1.00
	Intermittent pain	0.53	0.11	0.95	1.00
	Neuropathic pain	−0.07	−0.53	0.40	1.00
	Affective	−0.29	−0.72	0.14	1.00
Continuous pain	Throbbing pain	0.68	0.13	1.23	1.00
	Cramping pain	0.14	−0.57	0.85	1.00
	Gnawing pain	0.09	−0.32	0.50	1.00
	Aching pain	−0.01	−0.67	0.66	1.00
	Heavy pain	−0.13	−0.71	0.45	1.00
	Tenderness	0.07	−0.61	0.75	1.00
Intermittent pain	Shooting pain	0.10	−0.25	0.45	1.00
	Stabbing pain	0.08	−0.23	0.40	1.00
	Sharp pain	0.19	−0.12	0.50	1.00
	Splitting pain	0.65	0.25	1.03	1.00
	Electric-shock pain	−0.08	−0.36	0.21	1.00
	Piercing	0.08	−0.25	0.40	1.00
Neuropathic pain	Hot-burning pain	0.32	−0.19	0.81	1.00
	Cold-freezing pain	0.09	−0.33	0.53	1.00
	Pain caused by light touch	0.58	0.18	0.99	1.00
	Itching	0.06	−0.38	0.50	1.00
	Tingling or pins and needles	−0.02	−0.53	0.51	1.00
	Numbness	0.04	−0.44	0.51	1.00
Affective	Tiring-exhausting	−0.39	−0.82	0.03	1.00
	Sickening	0.13	−0.32	0.58	1.00
	Fearful	0.19	−0.26	0.63	1.00
	Punishing-cruel	0.61	0.19	1.02	1.00

CI: credible intervals.