Table 1.
Descriptive statistics of the discovery set (example) and the external validation set
| Discovery set | External validation set | |||
|---|---|---|---|---|
| ABCD n = 4892 | Generation R n = 2043 | |||
| ABCDTraining | ABCDTest | |||
| N | 4230 | 662 | N | 2043 |
| Age (years), M(SD) | 10.0 (0.6) | 10.0 (0.6) | Age (years), M(SD) | 10.1 (0.6) |
| Sex | Sex | |||
| Female (%) | 48.9 | 48.5 | Female (%) | 52.4 |
| Race/ethnicity (%) | Nation of birth (%) | |||
| White | 58.3 | 48.8 | Dutch | 66.1 |
| African American | 12.0 | 11.2 | Non-Dutch European | 17.3 |
| Hispanic | 19.3 | 15.1 | Non-European | 16.6 |
| Asian | 1.5 | 5.9 | ||
| Others | 8.9 | 18.0 | ||
| Parental education (%) | Maternal education (%) | |||
| Low | 4.8 | 5.1 | Low | 2.8 |
| Medium | 38.1 | 39.1 | Medium | 34.5 |
| High | 57.1 | 55.8 | High | 62.7 |
| Child Behavior Checklist (CBCL), M(SD) | Child Behavior Checklist (CBCL), M(SD) | |||
| Anxious/depressed | 2.5(3.1) | 2.8(3.3) | Anxious/depressed | 2.2(2.6) |
| Withdrawn/depressed | 1.0(1.6) | 1.2(1.8) | Withdrawn/depressed | 1.1(1.6) |
| Somatic | 1.5(2.0) | 1.6(1.9) | Somatic | 1.5(1.9) |
| Social | 1.5(2.1) | 1.6(2.3) | Social | 1.5(2.1) |
| Aggressive | 3.0(4.2) | 3.3(4.2) | Aggressive | 2.7(3.5) |
| Rule-breaking | 1.0(1.7) | 1.2(1.9) | Rule-breaking | 0.9(1.4) |
| Thought problems | 1.5(2.1) | 1.8(2.3) | Thought problems | 1.5(2.0) |
| Attention problems | 2.6(3.3) | 3.0(3.4) | Attention problems | 2.9(3.0) |
| Internalizing scores | 5.0(5.5) | 5.6(5.9) | Internalizing scores | 4.7(5.0) |
| Externalizing scores | 4.1(5.6) | 4.5(5.7) | Externalizing scores | 3.6(4.6) |
| Total scores | 16.9(17.2) | 19.1(18.0) | Total scores | 16.6(15.1) |
Note. Values are frequencies for categorical variables and means and standard deviations for continuous variables. The descriptive statistics for ABCD were based on one of the 30 train-test splits, other splits showed similar statistics.
M mean, SD standard deviation.