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Table 1 Characteristics of the study population

From: An expansion of rare lineage intestinal microbes characterizes rheumatoid arthritis

  RA (n = 40) Control (n = 32)
Age, years, mean (median) 55.7 (54) 53.0 (52)
Female 70 % 81 %
BMI, mean (median), IQR 30.4 (30.1), 23.1–33.1 30.9 (30.6), 23.9–32.4
HLA-DR4 60 % NA
Disease activity parameters
 Disease duration, months, mean (median) 81.6 (47.5)  
 DAS28, mean (median), IQR 3.2 (2.6), 0–4.3  
 HAQ, mean (median), IQR 0.6 (0.5), 0.1–1.1  
 ESR, mm/h, mean (median), IQR 18.5 (11), 5–23  
 CRP, mg/l, mean (median), IQR 12.7 (3.6), 3–8.6  
 Patient VAS pain, mm, mean (median), IQR 37.3 (28.0), 12.8–49.5  
 TJC-28, mean (median), IQR 4.2 (1), 0–6  
 SJC-28, mean (median), IQR 4.3 (2), 0–8  
Autoantibody status
 RF-positive 100 %  
 ACPA-positive 83 %  
 RF titer, kU/l, mean (median), IQR 113 (63), 15–164  
 ACPA titer, kAU/l, mean (median), IQR 110 (99), 16–250  
Medication use
 Hydroxycholorquine 25.0 %  
 Methotrexate 61.2 %  
 Prednisone 48.9 %  
 Biological agent 34.0 %  
  1. ACPA anti-citrullinated protein antibody, BMI body mass index, CRP C-reactive protein, DAS Disease Activity Score, ESR erythrocyte sedimentation rate, HAQ Health Assessment Questionnaire, IQR interquartile range, RF rheumatoid factor, SJC swollen joint count, TJC tender joint count, VAS Visual Analog Scale