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Table 1 Demographic data for the early RA cohort (ARCTIC cohort) and the established RA cohort (ULRABIT cohort) and in combination

From: Assessing synovitis in the hands in patients with rheumatoid arthritis by ultrasound: an agreement study exploring the most inflammatory active side from two Norwegian trials

  ARTIC cohort ULRABIT cohort Combined cohort
Variable N Median 25 percentile 75 percentile N Median 25 percentile 75 percentile N Median 25 percentile 75 percentile Min Max
Age 230 53.9 41.7 62.5 212 53.2 42.05 61.45 442 53.6 42 62.1 18 86
Female sex, n (%) 230 141 61.3%   212 171 80.7%   442 312 70.6%    
Right hand dominance, n (%) 230 212 92.2%   201 198 98.5%   431 410 95.1%    
Right hand SJC, n (%) 162 90 55.6%   152 93 61.2%   314 183 58.3%    
Positive anti-CCP, n (%) 230 186 80.9%   211 164 77.7%   441 350 79.4%    
Positive RF, n (%) 230 164 71.3%   209 147 70.3%   439 311 70.8%    
Disease duration (months) n.a. n.a. n.a. n.a. 212 97.1 35.7 173.5 212 97.1 35.7 173.5 0.7 480
Symptom duration (days) 230 5.6 2.8 10.2 n.a. n.a. n.a. n.a. 230 5.6 2.8 10.2 0 23.9
SJC28 230 6 3 11 210 5 2 10 440 5 3 10 0 26
TJC28 230 6 3 11 210 4 1 9 440 6 2 10 0 28
ESR 229 20 11 32 209 25 13 39 438 22 12 35 1 113
CRP 230 7 3 18 209 6 2 14 439 7 3 16 0.3 126
Doctors Global VAS 229 36 23 55 205 28 20 40 434 33 22 48 0 93
Patient Global VAS 230 49.5 31 70 209 50 29 73 439 50 29 71 0 100
Ultrasound scoring: Baseline
 GS sum score in right hand 225 5 2 9 212 7 4 13 437 6 3 11 0 30
 GS sum score in left hand 225 5 2 8 212 6 3 12 437 6 2 10 0 30
 Doppler sum score in right hand 225 3 0 7 212 3 1 8 437 3 1 7 0 26
 Doppler sum score in left hand 225 2 0 5 212 3 1 7 437 2 0 6 0 25
 GLOESS score in right hand 225 5 2 10 212 7 4 13 437 7 3 12 0 30
 GLOESS score in left hand 225 5 2 9 212 6 3 12 437 6 2 10 0 30
Ultrasound scoring: 3 months from baseline
 GS sum score in right hand 116 0 0 2 179 5 3 11 295 3 0 8 0 28
 GS sum score in left hand 116 0 0 2 179 4 2 9 295 2 0 7 0 27
 Doppler sum score in right hand 116 0 0 0 179 2 0 5 295 0 0 4 0 23
 Doppler sum score in left hand 116 0 0 0 179 2 0 5 295 0 0 3 0 24
 GLOESS score in right hand 116 0 0 2,5 179 6 3 11 295 3 0 8 0 28
 GLOESS score in left hand 116 0 0 2 179 4 2 9 295 2 0 7 0 27
  1. SJC swollen joint count, TJC tender joint count, ESR erythrocyte sedimentation rate, CRP C-reactive protein, VAS visual analogue scale, GS grey-scale, GLOESS OMERACT-EULAR combined scoring system