Table 1.

Baseline demographics and clinical characteristics

	Abatacept+MTX (N=104)
Mean age (SD), years	56 (14)
Female, %	84
Caucasian, %	97
Mean disease duration (SD), years	7 (9)
Mean tender joint count (SD)	20 (12)
Mean swollen joint count (SD)	13 (8)
Mean high-sensitivity CRP (SD), mg/dL	1.4 (1.9)
Mean DAS28 (CRP)* (SD)	5.3 (1.1)
Mean GLOESS† (MCPs 2–5) (SD)	12.6 (4.1)
Mean dose of MTX, mg/week	16
Concomitant corticosteroid use, %	53
Concomitant NSAID use, %	43

*n=103.

†n=96 (excludes patients from one site that experienced technical and quality issues with PDUS scoring and compliance issues).

CRP, C reactive protein; DAS, Disease Activity Score; GLOESS, Global OMERACT–EULAR (Outcome Measures in Rheumatology–European League Against Rheumatism) Synovitis Score; MCP, metacarpophalangeal joint; MTX, methotrexate; NSAID, non-steroidal anti-inflammatory drug; PDUS, power Doppler and greyscale ultrasound.