Table 1.
Participant Characteristics by Sex and Age
| Characteristic | Total (N=12 642) | Sex
|
Age, y
|
||||||
|---|---|---|---|---|---|---|---|---|---|
| Male (n=6502) | Female (n=6136) | P Valuea | <13 (n=5152) | ≥13 (n=7397) | P Valuea | ||||
| Family Affluence Scale score, mean (SE) | 5.4 (0.06) | 5.3 (0.06) | 5.4 (0.07) | .05 | 5.4 (0.07) | 5.3 (0.06) | .25 | ||
| Food intake, No. (%), times per day | |||||||||
| Fruit | |||||||||
| ≥1 | 5297 (44.6) | 2562 (41.8) | 2734 (47.5) |
|
<.001 | 2412 (51.4) | 2832 (39.6) |
|
<.001 |
| <1 | 6724 (54.4) | 3577 (58.2) | 3145 (52.5) | 2392 (48.6) | 4299 (60.4) | ||||
| Vegetables | |||||||||
| ≥1 | 4382 (38.7) | 2067 (35.2) | 2314 (42.3) |
|
<.001 | 1886 (41.7) | 2450 (36.2) |
|
<.001 |
| <1 | 7459 (61.3) | 3955 (64.8) | 3502 (57.7) | 2820 (58.3) | 4601 (63.8) | ||||
| Sweets | |||||||||
| ≥1 | 2941 (24.7) | 1352 (22.4) | 1588 (27.1) |
|
.001 | 1084 (22.5) | 1841 (26.3) |
|
<.001 |
| <1 | 8863 (75.3) | 4656 (77.6) | 4205 (72.9) | 3619 (77.5) | 5197 (73.7) | ||||
| Soda | |||||||||
| ≥1 | 3637 (30.1) | 1881 (30.9) | 1754 (29.3) |
|
.01 | 1277 (26.2) | 2347 (33.2) |
|
<.001 |
| <1 | 8312 (69.9) | 4198 (69.1) | 4113 (70.7) | 3504 (73.8) | 4738 (66.8) | ||||
| Skipping breakfast, No. (%), d/wk | |||||||||
| ≥1 | 799 (54.8) | 3239 (51.8) | 3558 (58.0) |
|
<.001 | 2332 (45.9) | 4443 (61.9) |
|
<.001 |
| <1 | 5236 (45.2) | 2879 (48.2) | 2355 (42.0) | 2529 (54.1) | 2644 (38.1) | ||||
| Fast food, No. (%), d/wk | |||||||||
| ≥1 | 4256 (34.1) | 2215 (35.0) | 2038 (33.2) |
|
.17 | 1574 (31.7) | 2666 (36.3) |
|
.02 |
| <1 | 8218 (65.9) | 4184 (65.0) | 4034 (66.8) | 3465 (68.3) | 4682 (63.7) | ||||
| Television viewing, mean (SE), h/d | 2.4 (0.06) | 2.5 (0.06) | 2.4 (0.07) | .005 | 2.5 (0.07) | 2.4 (0.06) | .79 | ||
| Computer use, mean (SE), h/d | 2.8 (0.08) | 3.1 (0.10) | 2.5 (0.08) | <.001 | 2.5 (0.09) | 3.0 (0.09) | <.001 | ||
| TV snacking, mean (SE), d/wkb | 3.3 (0.06) | 3.3 (0.07) | 3.3 (0.08) | .58 | NA | NA | NA | ||
| Computer snacking, mean (SE), d/wkb | 2.4 (0.07) | 2.54 (0.08) | 2.24 (0.08) | <.001 | NA | NA | NA | ||
| Physical activity, mean (SE), h/wk | 1.6 (0.03) | 1.8 (0.03) | 1.4 (0.04) | <.001 | 1.6 (0.04) | 1.6 (0.03) | .21 | ||
Abbreviation: NA, not applicable.
a
By t test or Pearson χ2 test of overall association.
b
Assessed only in respondents in grades 7 through 10.