Table 2. Performance of different cut-offs of GA and HbA1c to diagnose DM by OGTT. (n = 242).
| Threshold | Sensitivity (%) | Specificity (%) | LR+ | LR- | |
|---|---|---|---|---|---|
| GA (%) | 13.0 | 93.5 | 15.2 | 1.10 | 0.43 |
| 14.0 | 84.4 | 44.2 | 1.51 | 0.35 | |
| 14.8 | 64.9 | 65.5 | 1.88 | 0.54 | |
| 15.0 | 62.3 | 69.7 | 2.06 | 0.54 | |
| 15.5 | 48.1 | 77.6 | 2.14 | 0.67 | |
| 16.0 | 42.9 | 84.8 | 2.83 | 0.67 | |
| 16.6 | 36.4 | 90.3 | 3.75 | 1.41 | |
| 16.8 | 31.2 | 93.3 | 4.68 | 0.74 | |
| 17.0 | 29.9 | 93.9 | 4.93 | 0.74 | |
| 17.5 | 20.8 | 96.4 | 5.71 | 0.82 | |
| HbA1c (%) [mmol/mol] | 5.5 (37.0) | 87.0 | 58.2 | 2.08 | 0.22 |
| 5.7 (39.0) | 81.8 | 68.5 | 2.59 | 0.27 | |
| 5.8 (40.0) | 76.6 | 72.7 | 2.81 | 0.32 | |
| 6.00 (42.) | 61.0 | 82.4 | 3.47 | 0.47 | |
| 6.5 (48.0) | 31.2 | 93.3 | 4.68 | 0.74 | |
| 6.8 (51.0) | 22.1 | 98.2 | 12.14 | 0.79 |
DM, Type 2 diabetes mellitus; HbA1c, glycated haemoglobin; GA, glycated albumin; LR, likelihood ratio; OGTT, oral glucose tolerance test.