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Demographic characteristics
| Descriptive Statistics | N = 27 subjects | N=152 procedures |
|---|---|---|
| Age in years | ||
| Mean | 8.1 | 8.2 |
| Range | 1-18 | 1-18 |
| SD | 5.7 | 5.4 |
| Gender | ||
| Male | 17 (62.9%) | 108 (71.0%) |
| Female | 10 (37.0%) | 44 (29.0%) |
| Race | ||
| Black or African American | 7 (25.9%) | 32 (21.0%) |
| White | 19 (70.4%) | 116 (76.3%) |
| More than one race | 1 (3.7%) | 4 (2.6%) |
| Ethnicity | ||
| Hispanic | 4 (14.8%) | 20 (13.2%) |
| Non-Hispanic | 23 (85.2%) | 132 (86.8%) |
