Fig. 3From: Low calf circumference is associated with frailty in diabetic adults aged over 80 yearsROC curve analysis of CC for frailty. AUC = 0.786 (P < 0.001); 95% CI, 0.669–0.904; CC cut-off point = 29.3 cm; Youden index = 0.536; sensitivity, 75.0%; Specificity, 78.6%Back to article page