Table 1.
Demographic and acquisition site characteristics of the sample. SD, standard deviation; IQR, interquartile range; SES, socioeconomic status; UCLA, University of California, Los Angeles; UMinn, University of Minnesota; WUSTL, Washington University in St Louis.
| Participants (n = 628) | |
|---|---|
| Mean age in years (SD) | 14.7 (3.9) |
| Range (years) | 8.1–21.9 |
| Sex (% female) | 52.7 |
| Race (%) | |
| Native American/Alaska native | 1.8 |
| Asian | 10.3 |
| Black/African American | 18.3 |
| Native Hawaiian/Pacific Islander | 0.5 |
| White | 58.2 |
| More than one race | 8.9 |
| Unknown | 2.0 |
| Ethnicity (%) | |
| Hispanic | 16.9 |
| Median income ($) | 110,000 |
| IQR ($) | 100,000 |
| SES bracket (%) | |
| Low | 23.4 |
| Medium | 33.5 |
| High | 43.0 |
| Acquisition site (%) | |
| Harvard | 34.0 |
| UCLA | 18.3 |
| UMinn | 26.3 |
| WUSTL | 21.3 |