Table 1. Baseline Characteristics of 11 873 Children Enrolled in the Adolescent Brain Cognitive Development Study.
| Characteristic | Participants, No. (%) |
|---|---|
| Age, mean (95% CI), mo | 118.9 (118.8-119.1) |
| Sexa | |
| Female | 5680 (47.8) |
| Male | 6187 (52.1) |
| Race/ethnicityb | |
| White | 6174 (52.0) |
| Black | 1777 (15.0) |
| Hispanic | 2407 (20.3) |
| Asian | 252 (2.1) |
| Otherc | 1245 (10.5) |
| BMI percentile, mean (95% CI) | 61.0 (60.4-61.5) |
| Obesed | 1956 (16.5) |
| Annual household income before taxes, $e | |
| <50 000 | 3222 (27.1) |
| 50 000-100 000 | 3070 (25.9) |
| >100 000 | 4563 (38.4) |
| Highest educational level of caregiverf | |
| <High school | 785 (6.6) |
| High school diploma or GED | 1258 (10.6) |
| Some college or associate degree | 3486 (29.4) |
| Bachelor’s degree | 3330 (28.0) |
| Postgraduate degree | 2994 (25.2) |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); GED, general education development.
a
Data were missing for 6 participants.
b
Data were missing for 12 participants.
c
Specific races and ethnicities included in this category were not reported in the data set.
d
Obesity was defined as BMI higher than the 95th percentile.
e
Data were missing for 1012 participants.
f
Data were missing for 14 participants.