Table 2.
Distribution of characteristics among study participants, National Health and Nutrition Examination Survey (NHANES) 2003–2006
| Characteristic | na | Percentage | Weighted | |
|---|---|---|---|---|
| Percentage | (95%CI) | |||
| Sex | ||||
| Male | 3223 | 49.2 | 48.1 | (46.6,49.5) |
| Female | 3324 | 50.8 | 51.9 | (50.5,53.4) |
| Age Group, y | ||||
| 18 – 24 | 859 | 13.1 | 11.1 | (9.9,12.4) |
| 25 – 44 | 2003 | 30.6 | 39.2 | (36.5,41.8) |
| 45 – 64 | 1936 | 29.6 | 33.0 | (30.7,35.5) |
| 65 or older | 1749 | 26.7 | 16.7 | (15.1,18.4) |
| Race/Ethnicity | ||||
| Non-Hispanic White | 3367 | 51.4 | 72.0 | (67.3,76.3) |
| Non-Hispanic Black | 1334 | 20.4 | 11.5 | (8.9,14.8) |
| Mexican American | 1403 | 21.4 | 7.9 | (5.9,10.5) |
| Other | 443 | 6.8 | 8.6 | (7.2,10.2) |
| Education Level | ||||
| High school graduate or less | 3431 | 52.4 | 41.8 | (39.3,44.4) |
| Some college/technical school | 1846 | 28.2 | 32.4 | (30.5,34.3) |
| College graduate | 1270 | 19.4 | 25.8 | (22.9,28.9) |
| Body Mass Index (BMI)b Category | ||||
| Underweight/Normal | 2177 | 33.3 | 35.0 | (33.1,37.0) |
| Overweight | 2290 | 35.0 | 33.7 | (31.8,35.7) |
| Obese | 2080 | 31.8 | 31.3 | (29.1,33.5) |
a
Unweighted sample size
b
Underweight/normal, overweight, and obese classifications are on the basis of body mass index, which is weight (kg) / height (m)2. Underweight/normal: < 25.0; overweight: 25.0–29.9; and obese: ≥ 30.0
Abbreviations: confidence interval (CI)