Test Characteristics (95% Confidence Interval) maximized under the Best Cut-off Point in Subjects with FPG 6.1–6.9 mmol/l.

Abbreviations: CI, Confidence Interval; FPG, Fasting Plasma Glucose; LR+, Positive Likelihood Ratio; LR−, Negative Likelihood Ratio; NPV, Negative Predictive Value; PPV, Positive Predictive Value; Sen, Sensitivity; Spec, Specificity.