Table 1.
Incidence rates of prediabetes and diabetes.
| Glycemic status at Baseline | n ∗ | Person-years | Glycemic status at 3-year follow-up | Outcomes (n) | Incidence rate (per 1,000 person-years) | |
|---|---|---|---|---|---|---|
| Crude rate (95% CI) | Age- and sex-standardized rates | |||||
| NGT | 2,833 | 8,499 | i-IGT | 609 | 71.6 (66.2–77.1) | 68.3 |
| 8,499 | i-IFG | 96 | 11.3 (9.5–13.5) | 12.9 | ||
| 8,499 | IFG-IGT | 108 | 12.7 (10.3–15.1) | 12.5 | ||
| 8,499 | Pre-DM | 813 | 95.7 (89.4–101.9) | 93.6 | ||
| 8,499 | DM | 188 | 22.1 (19.0–25.2) | 24.2 | ||
| 8,499 | Pre-DM or DM | 1,001 | 117.8 (111.0–124.6) | 117.8 | ||
|
| ||||||
| i-IFG | 640 | 1,920 | IFG-IGT | 75 | 39.1 (30.4–47.7) | 37.3 |
| 1,920 | DM | 144 | 75.0 (63.2–86.8) | 70.5 | ||
| 1,920 | IFG-IGT or DM | 219 | 114.4 (99.8–128.3) | 107.8 | ||
|
| ||||||
| i-IGT | 790 | 2,370 | IFG-IGT | 54 | 22.8 (16.8–28.8) | 21.7 |
| 2,370 | DM | 129 | 54.4 (45.3–63.6) | 56.9 | ||
| 2,370 | IFG-IGT or DM | 183 | 77.2 (66.5–88.0) | 78.6 | ||
|
| ||||||
| IFG-IGT | 314 | 942 | DM | 95 | 100.8 (81.6–120.0) | 104.3 |
|
| ||||||
| Pre-DM | 1,744 | 5,232 | DM | 368 | 70.3 (63.4–77.3) | 70.3 |
|
| ||||||
| NGT, Pre-DM | 4,577 | 13,731 | DM | 556 | 40.5 (37.2–43.8) | 42.2 |
∗Number of individuals at Baseline. NGT: normal glucose tolerance; i-IFG: isolated impaired fasting glucose; i-IGT: isolated impaired glucose tolerance; IFG-IGT: combined status of IFG and IGT; Pre-DM: prediabetes; DM: diabetes mellitus.