Table 3.

Factors associated with concordance (multivariate analysis) between clinical joint examination (CJE) and ultrasonography in B-mode (B-US) or power Doppler mode (PDUS) at baseline and after 4 months of TNF-α antagonist therapy. The data are p values.

	Baseline		Month 4
	CJE vs B-US	CJE vs PDUS	CJE vs B-US	CJE vs PDUS
Joint	0.202	0.063	< 0.0001	< 0.0001
Age	0.358	0.031	0.457	0.435
Sex	0.109	0.019	0.019	0.607
BMI	0.327	0.988	0.025	0.030
RA duration	0.054	< 0.0001	0.005	0.004
Surgery	0.212	0.403	0.134	0.185
HAQ	0.180	0.571	0.023	0.003
DAS28 ESR	< 0.0001	0.007	0.002	0.042
RF	0.048	0.188	0.409	0.031

TNF: tumor necrosis factor; BMI: body mass index; RA: rheumatoid arthritis; HAQ: Health Assessment Questionnaire score; DAS28: Disease Activity Score on 28 joints, computed using the erythrocyte sedimentation rate; RF: positive test for rheumatoid factor.