Cutoff Sensitivity Specificity PPV (%) NPV (%) Accuracy (%)
IS            
WC (cm) 89.2 0.589 0.713 81.0 45.4 63.3
BMI (kg/m2) 24.2 0.776 0.462 75.4 50.0 67.8
WHtR 0.539 0.766 0.484 75.3 49.4 67.5
BF% 31.5 0.751 0.517 76.6 50.0 68.0
IR            
WC (cm) 96.3 0.582 0.778 44.3 85.6 72.8
BMI (kg/m2) 31.6 0.448 0.903 64.5 84.0 79.9
WHtR 0.613 0.333 0.794 42.0 86.3 70.7
BF% 40.3 0.422 0.856 45.0 82.5 74.3
Cutoff-values were calculated using the Younden Index = Sensitivity + Specificity -1. Abbreviations: PPV: Positive Predictive Value; NPV: Negative Predictive Value; IS: Insulin Sensitivity; IR: Insulin Resistance; WC: Waist Circumference; BMI: Body-Mass Index; WHtR: Waist-to-Height ratio; BF%: Body Fat percent.
Table 5: Proposed Cutoff values for Anthropometric Indices to determine IS & IR in Females from Central Mexico.