ADAMTS13 and atrial fibrillation: Including ADAMTS-13 activity thus only slightly improved the AUROC [0.761 (95% CI: 0.643–0.879)] in discriminating AF from ESUS compared to CHA2DS2VASC alone [AUC: 0.737 (95% CI: 0.620–0.854); ΔAUROC: 0.024 (95% CI: −0.035–0.082)].