Table 1.
Characteristics of all NHANES III subjects and our study subpopulation
| Characteristics | All (187.52 million) |
Subpopulation (14.58 million) |
|---|---|---|
| Age at interview | 43.25 (0.40) | 36.33 (0.34) |
| Sex | ||
| Male | 89.49 (47.72) | 8.18 (56.11) |
| Female | 98.03 (52.28) | 6.40 (43.89) |
| Race | ||
| White | 157.72 (84.11) | 11.16 (76.50) |
| Black | 21.81 (11.63) | 2.23 (15.30) |
| Other | 7.98 (4.26) | 1.19 (8.19) |
| Poverty-income ratio | ||
| ≥1 | 151.86 (80.99) | 10.79 (74.01) |
| <1 | 22.43 (11.96) | 2.12 (14.55) |
| Obesity status, based on body mass index | ||
| Underweight | 5.12 (2.73) | 0.87 (5.98) |
| Normal/overweight | 141.75 (75.59) | 11.38 (77.79) |
| Obese | 40.48 (21.59) | 2.36 (16.10) |
| Smoking in household | ||
| Yes | 68.32 (36.44) | 7.29 (49.97) |
| No | 119.13 (63.53) | 7.29 (49.97) |
| Urbanization | ||
| Yes | 91.62 (48.86) | 7.73 (52.99) |
| No | 95.90 (51.14) | 6.85 (47.01) |
Note: Estimated count in millions (percentage) for categorical variables and mean (standard error) for continuous variables for each category.