Table 1.

Baseline cross-sectional associations

Variables Tender points ≥11Tender joint count <11Adj. Bivariate
Mean (SD)n=40n=440p
RA disease activity
 RA disease duration (years)16.3 (8.9)14.9 (9.3)0.31
 CRP (mg/L)17.4 (24.4)14.5 (13.4)0.08
 DAS285.3 (1.0)4.4 (1.3)0.002
 PainVAS4.5 (2.2)3.5 (2.3)0.03
 SJC9.8 (5.7)6.8 (5.1)0.04
 TJC13.3 (5.6)7.4 (6.5)<0.001
 Patient disease activity VAS4.7 (2.2)3.7 (2.3)0.03
Fibromyalgia related variables
 Muscular tenderness VAS5.9 (2.7)3.2 (2.6)<0.001
 Fatigue VAS6.6 (2.7)4.4 (2.7)<0.001
 Headache VAS2.0 (2.4)1.4 (2.1)0.25
 Abdominal pain VAS3.7 (3.5)1.9 (2.3)<0.001
 Difficulty concentrating VAS2.9 (2.7)1.7 (1.1)0.003
Health Status
HAQ1.2 (0.1)1.0 (0.0)0.09