| Sex (male/female) | 2/11 |
| Race/ethnicity | 8 Caucasian, 5 Hispanic |
| Age, years | 53.4 (12.9) |
| RA duration, years | 12.2 (7.5) |
| MTX dose, mg/week | 17.2 (5.2) |
| Prior DMARDS failed* | 2.2 (2) |
| Prior TNF inhibitor use | 11/13 (85%) |
| Prednisone use | 12/13 (92%) |
| Prednisone dose, mg/day | 6.3 (3) |
| DAS28 score | 6.6 (1.34) |
| HAQ score | 1.7 (0.7) |
Values reported are mean (SD) unless otherwise indicated.
*Exclusive of methotrexate (MTX); does not include biologic agents.
DAS, Disease Activity Score; DMARD, disease-modifying antirheumatic drug; HAQ, Health Assessment Questionnaire; TNF, tumour necrosis factor.