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Subject demographics (n=50)
| Characteristic | Number (%) |
|---|---|
| Age (years) | |
| Median | 12.5 |
| Range | 2–21 |
| Gender | |
| Male | 31 (62) |
| Female | 19 (38) |
| Race | |
| White | 39 (78) |
| Black or African American | 9 (18) |
| Other | 2 (4) |
| Ethnicity | |
| Non-Hispanic | 44 (88) |
| Hispanic | 4 (8) |
| Unknown | 2 (4) |
