The relationship between disease activity, sleep, psychiatric distress and pain sensitivity in rheumatoid arthritis: a cross-sectional study

Table 3 Univariate association between clinical variables and pain threshold at the wrists, thumbnails and trapezius muscles

Variable	Wrist pressure pain threshold		Thumbnail pressure pain threshold		Trapezius pressure pain threshold
	r	Pvalue	r	Pvalue	r	Pvalue
Disease activity variables
C-reactive protein	-0.24	0.09	-0.12	0.39	0.07	0.61
Swollen joint count	-0.37	0.004	-0.18	0.16	-0.14	0.30
Tender joint count	-0.49	0.0001	-0.37	0.004	-0.36	0.006
DAS28-CRP	-0.42	0.002	-0.29	0.03	-0.20	0.16
Sleep
Medical Outcomes Study Sleep	-0.51	< 0.0001	-0.44	0.0005	-0.43	0.0008
Psychosocial Variables
HADS - Total	-0.42	0.0009	-0.35	0.006	-0.22	0.09
HADS - Depression	-0.37	0.004	-0.33	0.01	-0.19	0.15
HADS - Anxiety	-0.34	0.008	-0.27	0.04	-0.20	0.13

CRP = C-reactive protein; DAS28 = Disease Activity Score in 28 joints; HADS = Hospital Anxiety and Depression Scale.

ISSN: 1478-6362