Correlation between demographic and clinical data to antibodies concentration levels.
| Variable | Negative or Low Concentration of ADAb | High Concentration of ADAb | p |
|---|---|---|---|
| Age, yrs | 54.5 | 49 | 0.15 |
| Female sex | 56% | 42% | 0.32 |
| Therapeutic drug level | 88% | 37% | 0.0005* |
| DAS28 | 3.2 | 4.1 | 0.024* |
| VAS | 24 | 42 | 0.0005* |
| PASI | 2.9 | 5.7 | 0.11 |
| BASDAI | 3.7 | 5 | 0.37 |
| Concomitant MTX | 27% | 21% | 0.77 |
↵* Significant data. ADAb: antidrug antibodies; DAS28: 28-joint Disease Activity Score; VAS: visual analog scale; PASI: Psoriasis Area and Severity Index; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; MTX: methotrexate.