| Threshold | Sensitivity | Specificity | PPV | NPV |
---|
(%) | (%) | (%) | (%) |
---|
FPG | 6.5Â mmol/l | 82.7 | 86.6 | 10.9 | 99.6 |
2-hour PG | 11.5Â mmol/l | 90.4 | 89.3 | 14.3 | 99.8 |
HbA1c | 6.1% (43Â mmol/mol) | 86.5 | 88.8 | 13.3 | 99.7 |
GA | 17.0% | 86.5 | 89.0 | 13.5 | 99.7 |
1,5-AG | 12.1 μg/mL | 78.8 | 85.8 | 9.9 | 99.5 |
- FPG: fasting plasma glucose; 2-hour PG: 2-hour postload glucose; HbA1c: hemoglobin A1c; GA: glycated albumin; 1,5-AG: 1,5-anhydroglucitol; PPV: positive predictive value; NPV: negative predictive value.
- The optimal threshold was defined as the point on the receiver operating characteristic curve closest to the ideal of 100% sensitivity and 100% specificity.