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Table 1 Baseline characteristics of included patients.

From: Value of self-performed joint counts in rheumatoid arthritis patients near remission

     P-value
Baseline characteristics TOTAL TRAINED UNTRAINED trained vs. untrained
Number 209 78 131  
Female 80.4% 79.5% 80.9%  
Rheumatoid factor pos. 55.5% 52.6% 57.3%  
Age (years) 56.3(12.3) 54.2 (12.6) 57.6 (12.0) 0.06
Disease duration (years) 11.4 (9.6) 11.0 (9.2) 11.6 (9.9) 0.66
PGA (mm) 28.1 (21.9) 28.1 (22.4) 28.0 (21.7) 0.97
VAS pain (mm) 26.2 (21.0) 26.1 (20.9) 26.2 (21.2) 0.99
EGA (mm) 12.9 (13.5) 16.3 (15.7) 10.8 (11.5) 0.004
CRP (mg/dl) 0.92 (2.0) 1.0 (1.7) 0.89 (2.2) 0.81
ESR (mm/hr) 26.2 (22.3) 28.2 (26.1) 25.1 (20.1) 0.38
HAQ 0.78 (0.72) 0.81 (0.74) 0.77 (0.71) 0.71
SJC28 biometrican 2.4 (3.0) 3.3 (3.3) 1.9 (2.7) 0.001
TJC28 biometrican 2.7 (4.5) 2.4 (4.1) 2.9 (4.7) 0.48
SJC28 physician 2.4 (1.9) 3.1 (3.1) 1.9 (2.7) 0.004
TJC28 physician 3.0 (4.1) 2.9 (3.7) 3.0 (4.4) 0.85
SJC28 patient 3.1 (4.3) 2.7 (3.6) 3.4 (4.7) 0.28
TJC28 patient 3.4 (5.2) 3.0 (4.5) 3.7 (5.6) 0.33
CDAI 9.0 (7.4) 10.1 (7.9) 8.4 (7.0) 0.097
SDAI 10.0 (7.8) 11.1 (8.5) 9.3 (7.4) 0.094
DAS28 3.4 (1.1) 3.4 (1.2) 3.4 (1.1) 0.33
  1. Data are shown as mean (SD) unless indicated otherwise.
  2. CDAI: Clinical Disease Activity Index, CRP: c-reactive protein, DAS28: disease activity score 28, EGA: evaluator global assessment of disease activity, ESR: erythrocyte sedimentation rate, HAQ: health assessment questionnaire, PGA: patient global assessment of disease activity, SDAI: simplified disease activity score, SJC28: swollen joint count, TJC28: tender joint count, VAS: pain visual analogue scale of pain