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Table 1 Demographic, laboratory and clinical data for the RA patient group (n = 143)

From: HLA-DRB1 shared epitope genotyping using the revised classification and its association with circulating autoantibodies, acute phase reactants, cytokines and clinical indices of disease activity in a cohort of South African rheumatoid arthritis patients

Parameters Data Median [IQR] Range
Age (years) 48 ± 12 48 [41 to 56] 20 to 75
Females, n (%) 118 (82.5%)   
Blacks, n (%) 124 (86.7%)   
DAS28-CRP 5.6 ± 1.3 5.7 [4.8 to 6.7] 2.3 to 8.7
Disease duration (months) 12 ± 7 10 [6 to 18] 0 to 25
Larsen radiographic scores 23 ± 14 19 [14 to 28] 1 to 66
RF (IU/ml) 490 ± 795 168 [38 to 595] 4 to 5,350
aCCP (U/ml) 669 ± 636 492 [85 to 1,099] 2 to 2,527
CRP (μg/L) 24 ± 32 14 [5 to 32] 0 to 198
SAA (μg/ml) 62 ± 123 14 [5 to 65] 1 to 882
  1. aCCP = anticyclic citrullinated peptide antibodies; CRP = C-reactive protein; DAS28 = Disease Activity Score in 28 joints; RF = rheumatoid factor; SAA = serum amyloid A. Data are means ± SD, n (%), medians [25th to 75th IQR] or raw data as indicated.