Table 3. Sensitivity and specificity at standard and optimum cut-off points.
| Hyperglycaemic state | Test | Cut-off points‡ | Sensitivity (95% CI)# | Specificity (95% CI)# | |||
|---|---|---|---|---|---|---|---|
| Standard | Optimum | Standard | Optimum | Standard | Optimum | ||
| Diabetes | FPG | ≥7.0 (126) | 6.4 (115.2) | 62.6 (41.5–79.8) | 72.7 (49.5–87.8) | 99.4 (98.9–99.7) | 98.7 (98.0 99.2) |
| HBA1C | ≥48 (6.5) | 45.0 (6.3) | 69.8 (46.3, 86.1) | 71.2 (46.5–87.6) | 98.6 (95.4–99.6) | 95.1 (91.8–97.2) | |
| AGR⸸ | FPG (WHO) | ≥ 6.1 (110) | 5.5 (99.0) | 29.0 (22.5–36.6) | 53.2 (43.1–63.1) | 98.3 (97.4–98.9) | 92.7 (91.0–94.1) |
| FPG (ADA) | ≥ 5.6 (100) | 47.7 (37.3–58.4) | 93.5 (88.6–96.4) | ||||
| HBA1C (ADA) | ≥ 39 (5.7) | 42.0 (6.0) | 58.9 (46.7–70.2) | 42.3 (31.8–53.6) | 70.7 (65.1–75.8) | 89.1 (84.1–92.7) | |
‡Units are mmol/L (mg/dl) for FPG and mmol/mol (%) for HBA1C
#Data are %