Table 3.
Annualized rates of diabetes by BMI category for a 47-year-old individual
| 1970s | 1980s | 1990s | 2000s | |
|---|---|---|---|---|
| Normal weight (BMI <25 kg/m2), n | 585 | 721 | 671 | 651 |
| BMI, mean (SD) | 22.7 (1.6) | 22.5 (1.7) | 22.5 (1.7) | 22.4 (1.7) |
| Incident diabetes, n | 2 | 8 | 7 | 6 |
| Annualized rate, per 1,000 individuals (95% CI) | 0.5 (0.1–1.8) | 1.4 (0.7–2.8) | 1.3 (0.6–2.8) | 1.6 (0.7–3.5) |
| Overweight (BMI 25 to <30 kg/m2), n | 542 | 604 | 654 | 637 |
| BMI, mean (SD) | 27.1 (1.4) | 27.2 (1.4) | 27.3 (1.4) | 27.3 (1.4) |
| Incident diabetes, n | 17 | 26 | 30 | 14 |
| Annualized rate, per 1,000 individuals (95% CI) | 4.1 (2.6–6.6) | 5.2 (3.5–7.7) | 5.6 (3.9–8.1) | 3.7 (2.2–6.2) |
| Class 1 obesity (BMI 30 to <35 kg/m2), n | 149 | 185 | 256 | 265 |
| BMI, mean (SD) | 31.9 (1.4) | 31.9 (1.3) | 32.0 (1.3) | 32.0 (1.4) |
| Incident diabetes, n | 8 | 12 | 29 | 12 |
| Annualized rate, per 1,000 individuals (95% CI) | 7.0 (3.5–13.9) | 8.0 (4.5–14.2) | 14.1 (9.7–20.5) | 7.5 (4.3–13.2) |
| Class 2 obesity (BMI ≥35 kg/m2), n | 32 | 41 | 82 | 139 |
| BMI, mean (SD) | 37.7 (3.4) | 38.8 (3.1) | 39.5 (4.4) | 39.3 (4.1) |
| Incident diabetes, n | 3 | 6 | 14 | 23 |
| Annualized rate, per 1,000 individuals (95% CI) | 11.7 (3.8–36.5) | 18.8 (8.4–41.9) | 21.7 (12.8–36.6) | 26.7 (17.7–40.5) |