Table 1

Spearman rank correlations between 78-joints sum scores of BM or PD and DAS28, CDAI, SDAI, assessor's global evaluation of disease activity (VAS), number of swollen and tender joints, and the laboratory markers ESR and CRP

	Baseline BM 78 joints	Baseline PD 78 joints	12 Months BM 78 joints	12 Months PD 78 joints
DAS28	0.18	0.28	0.60^*	0.64^*
CDAI	0.33	0.45^*	0.73^**	0.75^**
SDAI	0.34	0.46^*	0.77^**	0.78^**
Assessor's global	0.58^*	0.73^**	0.79^**	0.80^**
Swollen joints	0.40	0.52^*	0.84^**	0.84^**
Tender joints (of 40)	0.01	0.03	0.47^*	0.52^*
ESR (mm/h)	0.30	0.41	0.41	0.49^*
CRP (mg/l)	0.23	0.23	0.57^*	0.57^*

↵* p<0.05;
↵** p<0.001.
BM, B-mode; CDAI, Clinical Disease Activity Index; CRP, C reactive protein; DAS28, Disease Activity Score 28; ESR, erythrocyte sedimentation rate; PD, power Doppler; SDAI, Simplified Disease Activity Index; VAS, visual analogue scale.