Table 1 Demographic data for the discovery and replication samples
Variables | Males | Females |
|---|---|---|
Discovery sample: unrelated ABCD subjects | ||
Sample size | 5573 | 5082 |
Age (years) | 9–11 (9.9 ± 0.6) | |
Race (White/Black/Hispanic/Asian/Other) | 3021/733/1118/114/587 | 2653/751/1021/120/537 |
Replication sample #1: family-based “IMAGE” subjects | ||
Sample size (922 parent–child trios) | 802 offsprings | 122 offsprings |
Age (years) | 6–17 (10.9 ± 2.9) | |
Race | Europeans | Europeans |
Replication sample #2: family-based “PUWMa” subjects | ||
Sample size (735 parent–child trios) | 472 offsprings | 141 offsprings |
Age (years) | 6–17 (12.3 ± 4.0) | |
Race | Europeans | Europeans |
Replication sample #3: population-based “META_PGC_iPSYCH” subjects | ||
Sample size (cases/controls) | 14,154/17,948 | 4945/16,246 |
Age (years) | 3–19 | |
Race | Europeans | Europeans |