Fig. 5

Receiver operating curve of device BRT and standardized visual CRT to predict ED patients’ admissions. The area under the ROC curve of standardized visual CRT was 0.76 (95% CI, 0.58–0.94) and that of device BRT was 0.67 (95% CI, 0.46–87). ROC, receiver operating curve; ED, emergency department; BRT, blood refill time; CRT, capillary refill time