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Table 1 Characteristics of study populations

From: B lymphocyte stimulator (BLyS) isoforms in systemic lupus erythematosus: disease activity correlates better with blood leukocyte BLyS mRNA levels than with plasma BLyS protein levels

Parameter Normal RA SLE SLE repeat
Number of subjects 30 60 60 37
Age (mean [range]; years) 36.5 (21.2–54.4) 47.3 (19.1–71.7) 39.4 (19.4–66.8) 35.1 (20.4–66.3)
Sex (female/male; n) 27/3 52/8 56/4 36/1
Race (n)     
Asian 11 5 5 2
Black 3 3 6 3
Hispanic 13 51 49 32
White 3 1 0 0
Prednisone use     
Number of patients - 17 50 31
Mean dosage (mg/day) - 5.5 10.8 6.0
Dosage range (mg/day) - 2.5–10 2–30 1–30
Use of other medications (n)     
Cyclophosphamide - 0 4 2
Azathioprine - 4 27 15
Mycophenolate mofetil - 1 9 13
Methotrexate - 42 2 2
Sulfasalazine - 17 0 0
Hydroxychloroquine - 36 53 36
Leflunomide - 0 1 0
Any TNF antagonist - 18 0 0
  1. RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; TNF, tumor necrosis factor.