Table 1.
Sample characteristics of children and adolescent aged 6–19, NHANES 2003–2006
| Variable | All | Low income (PIR < 1.00) | Medium income (PIR 1.00–4.00) | High income (PIR > 4.00) | Missing income |
|---|---|---|---|---|---|
| Total, n (%) | 3551 (100) | 1042 (29.3) | 1797 (51.0) | 567 (15.9) | 145 (4.1) |
| Age, years (±SD) | 13.1 ± 3.86 | 13.3 ± 4.0 | 12.9 ± 3.8 | 13.1 ± 3.7 | 13.8 ± 3.8 |
| Sex, n (%) | |||||
| Boys | 1778 (50.1) | 493 (47.3) | 918 (51.1) | 286 (50.4) | 81 (55.9) |
| Girls | 1773 (49.9) | 549 (52.7) | 879 (48.9) | 281 (49.6) | 64 (44.1) |
| Race/ethnicity, n (%) | |||||
| Hispanic | 1346 (37.9) | 468 (44.9) | 693 (38.6) | 123 (21.7) | 62 (42.8) |
| White | 965 (27.2) | 140 (13.4) | 499 (27.8) | 301 (53.1) | 25 (17.2) |
| Black | 1240 (34.9) | 434 (41.7) | 605 (33.7) | 143 (25.2) | 58 (40.0) |
| Obesogenic behaviors | |||||
| MVPA (mins) ± SD | 40.4 ± 26.5 | 42.0 ± 27.1 | 40.0 ± 26.5 | 39.7 ± 26.0 | 38.9 ± 23.7 |
| Sedentary (mins) ± SD | 498.2 ± 162.2 | 500.7 ± 168.8 | 493.6 ± 161.1 | 504.3 ± 148.8 | 515.0 ± 178.4 |
| HEI-2010 ± SD | 44.1 ± 11.1 | 44.5 ± 10.8 | 43.6 ± 11.1 | 44.8 ± 11.8 | 44.1 ± 11.2 |
| Screen (mins) ± SD | 264.8 ± 152.9 | 292.6 ± 155.5 | 257.9 ± 150.2 | 228.3 ± 148.1 | 296.8 ± 145.6 |
| % body fat ± SD | 29.4 ± 8.8 | 30.0 (8.9) | 29.4 (8.9) | 28.0 (7.9) | 29.2 (9.5) |
Participants included in all obesogenic analysis had full data including valid accelerometer, dietary intake, and screen time measurements (N = 3551)
% body fat measured by the dual energy X-ray (DXA) included (3,133) children with valid accelerometer, dietary intake, and screen time measurements