Table 1. Demographics for the Adolescent Brain Cognitive Development (ABCD) study.
| Release 2.0.1 (%) | Sample with Complete Data Used in This Study (%) | |
|---|---|---|
| Sex | ||
| Male | 6,188 (52.1%) | 4,469 (52.4%) |
| Female | 5,681 (47.8%) | 4,055 (47.6%) |
| Missing/Undefined | 6 (0.1%) | 0 (0%) |
| Income Bracket | ||
| <$50K (Low) | 3,222 (27.1%) | 2,415 (28.3%) |
| $50-100K (Mid) | 3,070 (25.9%) | 2,482 (29.1%) |
| >$100K (High) | 4,565 (38.4%) | 3,627 (42.6%) |
| Missing/Undefined | 1,018 (8.6%) | 0 (0%) |
| Race | ||
| American Indian/Alaska Native | 62 (0.5%) | 42 (0.5%) |
| Asian | 276 (2.3%) | 188 (2.2%) |
| Black | 1,867 (15.7%) | 1,168 (13.7%) |
| Native Hawaiian/Pacific Islander | 16 (0.1%) | 10 (0.1%) |
| Other | 1,958 (16.5%) | 1,364 (16.0%) |
| White | 7,523 (63.4%) | 5,752 (67.5%) |
| Missing/Undefined | 173 (1.5%) | 0 (0%) |
| Ethnicity | ||
| Hispanic | 2,409 (20.3%) | 1,640 (19.2%) |
| Not Hispanic | 9,308 (78.4%) | 6,884 (80.8%) |
| Missing/Undefined | 158 (1.3%) | 0 (0%) |
| Total | 11,875 | 8,524 |