Table 1.
Discovery | Replication | Total | ||
---|---|---|---|---|
n | 663 | 336 | 999 | |
Sex | Male | 293 | 155 | 448 |
Female | 370 | 181 | 551 | |
Race | White | 306 | 153 | 459 |
Black | 286 | 141 | 427 | |
Other | 71 | 42 | 113 | |
Age | 8–10 | 70 | 40 | 110 |
11–13 | 125 | 63 | 188 | |
14–16 | 195 | 102 | 297 | |
17–19 | 206 | 100 | 306 | |
20–22 | 58 | 30 | 88 | |
>22 | 9 | 1 | 10 | |
Mean | 15.82 ± 3.32 | 15.65 ± 3.32 | 15.76 ± 3.32 |
The cross-sectional sample of the PNC has 1601 participants in total. After applying health, structural, and functional imaging quality exclusion criteria (details in Online Methods section), 663 and 336 subjects were included in the final discovery and replication samples, respectively