Table 3 .

Prediction of the US7 erosion sum score in GSUS after 12 months

At baseline	Regressions coefficient ß±SD	95% CI	p Value
US7 synovitis sum score in GSUS	0.140±0.038	0.066 to 0.215	p<0.001
US7 synovitis score in PDUS	0.099±0.051	−0.001 to 0.200	p=0.053
US7 tenosynovitis/paratenonitis scores in GSUS	0.167±0.111	−0.051 to 0.385	p=0.132
US7 tenosynovitis/paratenonitis scores in PDUS	0.068±0.127	−0.182 to 0.318	p=0.594
US7 erosion sum score in GSUS	0.844±0.026	0.793 to 0.895	p<0.001
DAS28	0.621±0.141	0.345 to 0.898	p<0.001
ESR	0.008±0.010	−0.011 to 0.027	p=0.399
CRP	0.001±0.009	−0.017 to 0.018	p=0.945
RF	−2.167±0.00	0.00 to 0.00	p=0.631
APCA	6.392±0.00	−0.001 to 0.001	p=0.891

ESR, erythrocyte sedimentation rate; GSUS, grey-scale ultrasound; PDUS, power Doppler ultrasound; RF, Rheumatoid factor; US, ultrasound.