Table 1.
Distribution of characteristics among study participants, National Health and Nutrition Examination Survey (NHANES) 2003–2006 (n = 6,525).
| Unweighted | Weighted | |||
|---|---|---|---|---|
| n | % | % | (95% CI) | |
| Sex | ||||
| Male | 3,220 | 49.4 | 48.1 | (46.7, 49.6) |
| Female | 3,305 | 50.7 | 51.9 | (50.4, 53.3) |
| Age group | ||||
| 18–24 years | 876 | 13.4 | 11.2 | (9.9, 12.5) |
| 25–44 years | 1,991 | 30.5 | 39.2 | (36.5, 41.8) |
| 45–64 years | 1,926 | 29.5 | 33.0 | (30.6, 35.4) |
| 65+ years | 1,926 | 29.5 | 16.6 | (15.0, 18.3) |
| Race/Ethnicity | ||||
| Non-Hispanic White/other | 3,600 | 55.2 | 77.0 | (72.8, 81.2) |
| Non-Hispanic Black | 1,329 | 20.4 | 11.5 | (8.6, 14.5) |
| Hispanic | 1,596 | 24.5 | 11.5 | (8.8, 14.2) |
| Body Mass Index (BMI; kg/m2) | ||||
| Underweight | 104 | 1.6 | 1.7 | (1.4, 2.0) |
| Healthy weight | 2,042 | 31.3 | 32.8 | (30.9, 34.8) |
| Overweight | 2,042 | 31.3 | 34.0 | (32.0, 35.9) |
| Obese | 2,082 | 31.9 | 31.5 | (29.3, 33.7) |
CI, confidence interval. Underweight, normal, overweight, and obese classifications are on the basis of body mass index, which is weight (kg)/height (m)2. Underweight, <18.5; healthy, 18.5 24.9; overweight, 25.0–29.9; and obese, ≥30.0.