Table 4.

AUC obtained from ROC of each scoring method. Optimal threshold is defined as that which maximises the Youden index

Scoring method	AUC (95% CI)	Optimal threshold (95% CI)	Sensitivity at threshold (95% CI)	Specificity at threshold (95% CI)
MRI whole-body synovitis score	0.765 (0.614–0.916)	5.5 (5.5–5.5)	61.1% (38.9–83.3%)	96.2% (88.5–100%)
MRI whole-body erosion score	0.650 (0.482–0.817)	1.5 (1.5–1.5)	44.4% (22.2–66.7%)	84.6% (69.2–96.2%)
Swollen joint count	0.856 (0.737–0.976)	1.5 (1.5–1.5)	66.7% (44.4–88.9%)	95.7% (87.0–100%)
Tender joint count	0.640 (0.486–0.813)	5.5 (5.5–5.5)	55.6% (33.3–77.8%)	73.9% (56.5–91.3%)