Table 2 Best cut-off values of each variable
From: A sarcopenia prediction model based on the calf maximum muscle circumference measured by ultrasound
Variable | Youden index | Best cut-off value | Layer value (1=,else = 0) | Sensitivity ( % ) | Specificity (% ) | AUC |
|---|---|---|---|---|---|---|
Age(year) | 0.218 | 69.5 | >70 | 66.7 | 55.1 | 0.641 ( 0.557–0.725 ) |
ALB(g/L) | 0.463 | 39.8 | <40 | 79.6 | 66.7 | 0.725 ( 0.644–0.806 ) |
Gmh MT(mm) | 0.436 | 15.2 | <15 | 65.3 | 78.3 | 0.777 ( 0.705–0.849 ) |
Glh MT(mm) | 0.436 | 15.2 | <15 | 65.3 | 78.3 | 0.777 ( 0.705–0.849 ) |
BR MT(mm) | 0.401 | 15.2 | <15 | 63.3 | 76.8 | 0.681 ( 0.594–0.768 ) |
CMMC(cm) | 0.524 | 24.3 | <24 | 95.9 | 56.5 | 0.755 ( 0.675–0.836 ) |