Table 2: Dose escalation, co-therapy intensification, discontinuation, and dose de-escalation over 12 and 18 months.

ETN
n=156
n (%)
IFX
n=32
n (%)
ETN VS. IFX
P-value
ADA
n=126
n (%)
ETN VS. ADA
P-value
12 months after anti-TNF initiation
Dose escalation 0 (0.0) 12 (37.5) <0.001 2 (1.6) 0.199
Dose escalation and/or DMARD intensification 17 (10.9) 13 (40.6) <0.001 18 (14.3) 0.468
Dose escalation and/or DMARD and/or glucocorticoid intensification 25 (16.0) 15 (46.9) <0.001 35 (27.8) 0.019
Discontinue anti-TNF and switch to another biologic 7 (4.5) 1 (3.1) 1.000 12 (9.5) 0.101
Discontinue anti-TNF but no switch 6 (3.8) 0 (0.0) 0.592 6 (4.8) 0.772
Dose de-escalation 1 (0.6) 0 (0.0) 1.000 0 (0.0) 1.000
18 months after anti-TNF initiation n=102 n=25 n=90
Dose escalation 0 (0.0) 8 (32.0) <0.001 2 (2.2) 0.218
Dose escalation and/or DMARD intensification 11 (10.8) 10 (40.0) 0.001 17 (18.9) 0.151
Dose escalation and/or DMARD and/or glucocorticoid intensification 16 (15.7) 11 (44.0) 0.005 31 (34.4) 0.004
Discontinue anti-TNF and switch to another biologic 6 (5.9) 1 (4.0) 1.000 20 (22.2) 0.001
Discontinue anti-TNF but no switch 2 (2.0) 0 (0.0) 1.000 6 (6.7) 0.150
Dose de-escalation 2 (2.0) 0 (0.0) 1.000 1 (1.1) 1.000

ETN=Etanercept, IFX=Infliximab, ADA=Adalimumab