Table 1.

Clinical features of RA patient subpopulation groups tested for qRT-PCR analysis.

Clinical feature	Unstable on DMARD (n = 18)	Stable on DMARD (n = 26)	Stable on combination therapy (n = 20)
Gender (% female)	79	61	85
Age (years)	54.1	55.8	57.7
Race (% white, non-Hispanic)	67	50	90
Duration of disease (months)	220	200	227
DMARD use (%)	75	100	100
Prednisone use (%)	64	75	25
MTX weekly dose (mg)	15.5	9.95	14.5

See “Materials and Methods” section for details on patient background and selection.