RA (n=37) SpA (n=53) CD (n=47)
Type of TNF alpha blockers, n (%) IFX (n=68) ADA (n=69) 17 (46) 20 (54) 24 (45) 29 (55) 27 (57) 20 (43)
Concomitant MTX use, n (%) MTX mean dosage (mg/week), (mean ± SD) Concomitant AZA use, n (%) AZA mean dosage (mg/kg/day) 21 (56) 12.5 ± 2.63 0 - 11 (20) 15.71 ± 7.31 0 - 3 (6) 20 33 (70) 2.4 ± 0.88
Duration of TNF alpha blockers (months) 39.24 ± 29.92 35.84 ± 7.31 22.11 ± 9.82