TABLE 1.
Population Characteristics of Study Sample and Projected US Population of Adolescents 12 to 19 Years of Age (NHANES, 1999–2004)
| Study Sample | Projected US Populationa | |
|---|---|---|
| Total, n | 2515 | 28.0 × 106 |
| Age, mean ± SEM, y | 15.4 ± 0.04 | 15.5 ± 0.07 |
| Gender, n (%) | ||
| Boys | 1323 | 14.0 × 106 (51.4) |
| Girls | 1192 | 13.0 × 106 (48.7) |
| Race/ethnicity, n (%) | ||
| Non-Hispanic white | 672 | 17.0 × 106 (63.3) |
| Non-Hispanic black | 790 | 3.9 × 106 (14.3) |
| Hispanic | 977 | 4.6 × 106 (16.9) |
| Other race | 76 | 1.5 × 106 (5.6) |
| BMI, n (%) | ||
| <95th percentile | 2205 | 25.0 × 106 (89.7) |
| ≥95th percentile | 310 | 2.8 × 106 (10.3) |
| Abdominal obesity, n (%) | 505 | 5.0 × 106 (18.2) |
| Glucose level, n (%) | ||
| Normal fasting glucose levelb | 2125 | 25.0 × 106 (89.4) |
| Impaired fasting glucose level | 249 | 2.7 × 106 (9.9) |
| Diabetes mellitus | 10 | 0.2 × 106 (0.8) |
| Insulin resistance, n (%) | 429 | 4.0 × 106 (15.0) |
| Hypertension, n (%) | 72 | 0.8 × 106 (2.9) |
| High triglyceride levels, n (%) | 244 | 3.1 × 106 (11.3) |
| Low HDL cholesterol levels, n (%) | 191 | 2.5 × 106 (9.1) |
| Smoking, n (%) | 291 | 4.0 × 106 (14.8) |
| Metabolic syndrome, n (%) | 82 | 1.0 × 106 (3.6) |
| Microalbuminuria, n (%) | 226 | 2.4 × 106 (8.9) |
a
Adjusted for survey design and based on 2000 US Census data.
b
Fasting glucose level of <100 mg/dL without a history of diabetes mellitus or use of diabetes medication.