Table 1.
Descriptive statistics in the pooled sample by race.
| Level | All | White | Black | Asian American | Other/Mixed | p |
|---|---|---|---|---|---|---|
| n = 10,262 | n = 6832 | n = 1482 | n = 221 | n = 1727 | ||
| n (%) | n (%) | n (%) | n (%) | n (%) | ||
| Ethnicity | ||||||
| Non-Hispanic | 8321 (81.1) | 5674 (83.1) | 1408 (95.0) | 201 (91.0) | 1038 (60.1) | <0.001 * |
| Hispanic | 1941 (18.9) | 1158 (16.9) | 74 (5.0) | 20 (9.0) | 689 (39.9) | |
| Sex | ||||||
| Female | 4899 (47.7) | 3217 (47.1) | 733 (49.5) | 112 (50.7) | 837 (48.5) | 0.256 * |
| Male | 5363 (52.3) | 3615 (52.9) | 749 (50.5) | 109 (49.3) | 890 (51.5) | |
| Married Family | ||||||
| No | 3119 (30.4) | 1402 (20.5) | 1037 (70.0) | 33 (14.9) | 647 (37.5) | <0.001 * |
| Yes | 7143 (69.6) | 5430 (79.5) | 445 (30.0) | 188 (85.1) | 1080 (62.5) | |
| Household Income | ||||||
| <50K | 2948 (28.7) | 1252 (18.3) | 977 (65.9) | 35 (15.8) | 684 (39.6) | <0.001 * |
| ≥50K and <100K | 2941 (28.7) | 2079 (30.4) | 329 (22.2) | 53 (24.0) | 480 (27.8) | |
| ≥100K | 4373 (42.6) | 3501 (51.2) | 176 (11.9) | 133 (60.2) | 563 (32.6) | |
| Parental Education | ||||||
| <High School Diploma | 374 (3.6) | 143 (2.1) | 116 (7.8) | 5 (2.3) | 110 (6.4) | <0.001 * |
| High School Diploma | 850 (8.3) | 326 (4.8) | 334 (22.5) | 3 (1.4) | 187 (10.8) | |
| Some College | 2637 (25.7) | 1445 (21.2) | 592 (39.9) | 18 (8.1) | 582 (33.7) | |
| Bachelor’s | 2712 (26.4) | 2030 (29.7) | 222 (15.0) | 59 (26.7) | 401 (23.2) | |
| Postgraduate | 3689 (35.9) | 2888 (42.3) | 218 (14.7) | 136 (61.5) | 447 (25.9) | |
| Mean (S.D.) | Mean (S.D.) | Mean (S.D.) | Mean (S.D.) | Mean (S.D.) | ||
| Age (Months) | 118.97 (7.47) | 119.03 (7.49) | 118.96 (7.24) | 119.44 (7.84) | 118.67 (7.52) | 0.235 ** |
| Whole-brain cortical surface area (mm2) | 186,587.05 (183,13.07) | 189,085.27 (178,30.43) | 175,762.13 (171,18.70) | 187,249.30 (16,520.15) | 185,908.60 (17,984.12) | <0.001 ** |
Notes: Source: Adolescent Brain Cognitive Development (ABCD) Study; * Chi-square test; ** Analysis of Variance (ANOVA).