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Table 1 Patient characteristics (N = 65)

From: Therapeutic drug monitoring of anti-TNF drugs: an overview of applicability in daily clinical practice in the era of treatment with biologics in juvenile idiopathic arthritis (JIA)

Age, median (range) 12.6 (2.4–17.8)
IQR 9.7–15.9
Sex (number and proportion)
 Male 19 (29%)
 Female 46 (71%)
Diagnosis
 Oligo articular JIA, persistent 7 (11%)
 Oligo articular JIA, extended 6 (9%)
 Polyarticular JIA, RF negative 29 (45%)
 Polyarticular JIA, RF positive 9 (14%)
 Enthesitis-related JIA 10 (15%)
 Psoriatic arthritis 3 (5%)
 Undifferentiated 1 (2%)
Non-biologic DMARD usea
 Methotrexate 57 (78%)
 Leflunomide 2 (3%)
 Azathioprine 4 (6%)
 Cellcept 1 (1%)
 None 10 (14%)
  1. a some patients switched their non-biologic DMARD during treatment