Table 1.
Characteristics of study subjects
| SIGT | NHANES III | NHANES 2005–2006 | |
|---|---|---|---|
| n | 1,581 | 2,014 (weighted) | 1,111 (weighted) |
| Age (years) | 48 ± 0.3 | 55 ± 0.5 | 46 ± 1.0 |
| Male sex (%) | 42 ± 0.01 | 47 ± 1.1 | 49 ± 1.7 |
| Black (%) | 58 ± 0.01 | 10 ± 0.8 | 13 ± 2.1 |
| BMI (kg/m2) | 30 ± 0.2 | 27 ± 0.2 | 28 ± 0.2 |
| A1C (%) | 5.4 ± 0.01 | 5.4 ± 0.02 | 5.3 ± 0.02 |
| Glucose tolerance categories (%) | |||
| NGT | 62.1 ± 0.01 | 54.3 ± 1.5 | 59.1 ± 3.2 |
| IFG isolated | 18.0 ± 0.01 | 22.3 ± 1.4 | 21.8 ± 1.9 |
| IGT isolated | 7.2 ± 0.007 | 6.4 ± 0.7 | 5.0 ± 0.9 |
| IFG and IGT | 8.2 ± 0.007 | 9.4 ± 0.9 | 9.0 ± 1.3 |
| Diabetes | 4.6 ± 0.005 | 7.6 ± 0.6 | 5.2 ± 0.7 |
Data are means ± SEM.