Table 2.
Characteristics of study population, NHANES 2013–2016
| Characteristic | Na | %b | Medianb | (Interquartile range)b |
|---|---|---|---|---|
| Total | 1,420 | 100 | ||
| Age categories (years) | 47 | (33, 60) | ||
| 20–39 | 488 | 37.53 | ||
| 40–59 | 457 | 36.49 | ||
| ≥60 | 475 | 25.97 | ||
| Race/ethnicity | ||||
| Mexican American | 219 | 9.35 | ||
| Other Hispanic | 154 | 6.29 | ||
| Non-Hispanic white | 534 | 65.29 | ||
| Non-Hispanic black | 289 | 9.74 | ||
| Other/multi | 224 | 9.33 | ||
| Poverty: income (continuous) | 3.0 | (1.6, 5.0) | ||
| Pov:in quartiles | ||||
| First | 321 | 16.41 | ||
| Second | 318 | 20.40 | ||
| Third | 324 | 26.87 | ||
| Fourth | 322 | 36.32 | ||
| Missing | 135 | |||
| Body mass index (kg/m2 continuous) | 28.4 | (24.9, 32.4) | ||
| Body mass index categories | ||||
| Normal (<25 kg/m2) | 382 | 25.86 | ||
| Overweight (≥25-<30 kg/m2) | 526 | 36.04 | ||
| Obese (≥30 kg/m2) | 493 | 38.10 | ||
| Missing | 19 | |||
| Education | ||||
| Less than high school | 338 | 16.18 | ||
| High school or greater | 1,081 | 83.82 | ||
| Missing | 1 | |||
| Time of day of blood draw | ||||
| Morning | 704 | 50.91 | ||
| Afternoon | 505 | 33.02 | ||
| Evening | 211 | 16.06 |
aUnweighted.
bWeighted with respect to environmental subsample B. Some percentages may not sum to 100% because of weighting and missing responses.