TABLE 1.
Sensitivity and specificity for all values of HbA1c
| Hemoglobin A1c | Sensitivity % | 95% CI | Specificity % | 95% CI | Likelihood ratio |
|---|---|---|---|---|---|
| 2.150 | 100 | 94.72%‐100.0% | 1.786 | 0.5823%‐4.118% | 1.018 |
| 2.350 | 100 | 94.72%‐100.0% | 2.143 | 0.7904%‐4.605% | 1.022 |
| 2.450 | 100.00 | 94.72%‐100.0% | 2.857 | 1.241%‐5.552% | 1.029 |
| 2.600 | 100.0 | 94.72%‐100.0% | 4.286 | 2.234%‐7.367% | 1.045 |
| 2.750 | 98.53 | 92.08%‐99.96% | 6.071 | 3.576%‐9.543% | 1.049 |
| 2.850 | 97.06 | 89.78%‐99.64% | 10.36 | 7.047%‐14.54% | 1.083 |
| 2.950 | 95.59 | 87.64%‐99.08% | 12.14 | 8.558%‐16.55% | 1.088 |
| 3.050 | 94.12 | 85.62%‐98.37% | 15.36 | 11.34%‐20.12% | 1.112 |
| 3.150 | 94.12 | 85.62%‐98.37% | 16.43 | 12.29%‐21.30% | 1.126 |
| 3.250 | 92.65 | 83.67%‐97.57% | 20.36 | 15.80%‐25.56% | 1.163 |
| 3.350 | 92.65 | 83.67%‐97.57% | 21.43 | 16.77%‐26.70% | 1.179 |
| 3.450 | 92.65 | 83.67%‐97.57% | 22.14 | 17.42%‐27.47% | 1.19 |
| 3.550 | 92.65 | 83.67%‐97.57% | 26.43 | 21.36%‐32.00% | 1.259 |
| 3.650 | 91.18 | 81.78%‐96.69% | 27.14 | 22.02%‐32.75% | 1.251 |
| 3.750 | 91.18 | 81.78%‐96.69% | 28.21 | 23.02%‐33.88% | 1.27 |
| 3.850 | 86.76 | 76.36%‐93.77% | 29.29 | 24.02%‐34.99% | 1.227 |
| 3.950 | 85.29 | 74.61%‐92.72% | 31.43 | 26.03%‐37.22% | 1.244 |
| 4.050 | 77.94 | 66.24%‐87.10% | 34.29 | 28.74%‐40.17% | 1.186 |
| 4.150 | 76.47 | 64.62%‐85.91% | 37.86 | 32.15%‐43.82% | 1.231 |
| 4.250 | 73.53 | 61.43%‐83.50% | 40.00 | 34.22%‐46.00% | 1.225 |
| 4.350 | 70.59 | 58.29%‐81.02% | 42.14 | 36.29%‐48.16% | 1.22 |
| 4.450 | 69.12 | 56.74%‐79.76% | 44.64 | 38.73%‐50.67% | 1.249 |
| 4.510 | 64.71 | 52.17%‐75.92% | 47.5 | 41.53%‐53.53% | 1.232 |
| 4.560 | 63.24 | 50.67%‐74.61% | 48.93 | 42.93%‐54.95% | 1.238 |
| 4.650 | 63.24 | 50.67%‐74.61% | 54.29 | 48.25%‐60.23% | 1.383 |
| 4.750 | 60.29 | 47.70%‐71.96% | 59.64 | 53.64%‐65.44% | 1.494 |
| 4.850 | 50.00 | 37.62%‐62.38% | 62.86 | 56.91%‐68.53% | 1.346 |
| 4.950 | 47.06 | 34.83%‐59.55% | 67.5 | 61.67%‐72.95% | 1.448 |
| 5.050 | 45.59 | 33.45%‐58.12% | 70.71 | 65.01%‐75.98% | 1.557 |
| 5.150 | 42.65 | 30.72%‐55.23% | 76.43 | 71.01%‐81.28% | 1.809 |
| 5.250 | 36.76 | 25.39%‐49.33% | 80.00 | 74.83%‐84.52% | 1.838 |
| 5.350 | 35.29 | 24.08%‐47.83% | 83.57 | 78.70%‐87.71% | 2.148 |
| 5.450 | 32.35 | 21.51%‐44.79% | 85.71 | 81.06%‐89.59% | 2.265 |
| 5.550 | 26.47 | 16.50%‐38.57% | 86.79 | 82.25%‐90.52% | 2.003 |
| 5.650 | 20.59 | 11.74%‐32.12% | 88.21 | 83.85%‐91.75% | 1.747 |
| 5.750 | 17.65 | 9.465%‐28.80% | 90.00 | 85.87%‐93.25% | 1.765 |
| 5.850 | 13.24 | 6.235%‐23.64% | 91.43 | 87.52%‐94.43% | 1.544 |
| 5.950 | 11.76 | 5.218%‐21.87% | 93.57 | 90.03%‐96.15% | 1.83 |
| 6.050 | 10.29 | 4.240%‐20.07% | 93.93 | 90.46%‐96.42% | 1.696 |