Table 2.
The diagnostic profile of HbA1c
| HbA1c (%) | Sensivity | Specifity | NPV | PPV |
|---|---|---|---|---|
| 2.60 | 100 | 0 | – | 16.4 |
| 3.80 | 100 | 0.2 | 100 | 16.4 |
| 4.05 | 100 | 0.5 | 100 | 16.4 |
| 4.15 | 100 | 1.0 | 100 | 16.5 |
| 4.25 | 99.1 | 1.9 | 91.6 | 16.5 |
| 4.35 | 98.3 | 2.6 | 88.2 | 16.5 |
| 4.45 | 98.3 | 3.6 | 91.3 | 16.6 |
| 4.55 | 98.3 | 9.4 | 96.4 | 17.5 |
| 4.65 | 97.4 | 17.3 | 97.1 | 18.7 |
| 4.75 | 94.8 | 24.1 | 95.9 | 19.7 |
| 4.85 | 92.2 | 32.8 | 95.5 | 21.2 |
| 4.95 | 87.0 | 49.2 | 95 | 25.1 |
| 5.05 | 85.2 | 53.3 | 94.8 | 26.4 |
| 5.15 | 80.0 | 71.1 | 94.7 | 35.2 |
| 5.25 | 75.7 | 84.4 | 94.6 | 48.8 |
| 5.35 | 68.7 | 93.0 | 93.7 | 65.8 |
| 5.45 | 54.8 | 96.8 | 91.5 | 76.8 |
| 5.55 | 42.6 | 97.8 | 89.6 | 79 |
| 5.63 | 33.9 | 98.1 | 88.3 | 78 |
| 5.68 | 33.9 | 98.3 | 88.3 | 79.5 |
| 5.75 | 27.0 | 99.1 | 87.3 | 86.1 |
| 5.85 | 13.9 | 100 | 85.5 | 100 |
| 5.95 | 4.3 | 100 | 84.1 | 100 |
| 6.05 | 3.5 | 100 | 84 | 100 |
| 6.20 | 1.7 | 100 | 83.8 | 100 |
| 7.30 | 0 | 100 | 83.5 | – |
HbA1c glycosylated hemoglobin, NPV negative predictive value, PPV positive predictive value