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Demographic characteristics
| Variable | Number (Range or percentage) |
|---|---|
| Median Age (IQR) | 28 (9 – 40) |
| Sex | |
| Male | 27 (24.5%) |
| Female | 83 (75.5%) |
| Ethnicity | |
| European American | 82 (74.5%) |
| Hispanic | 6 (5.5%) |
| African American | 6 (5.5%) |
| Korean | 6 (5.5%) |
| Japanese | 2 (1.8%) |
| Filipino | 2 (1.8%) |
| Indian | 1 (0.9%) |
| Bangladeshi | 1 (0.9%) |
| Chinese | 1 (0.9%) |
| Pakistani | 1 (0.9%) |
| Vietnamese | 1 (0.9%) |
| Japanese/Filipino | 1 (0.9%) |
| Laterality | |
| Bilateral | 78 (70.9%) |
| Unilateral | 28 (25.5%) |
| Unknown | 4 (3.6%) |
| n=110 | |
