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Characteristics of the study population
| Characteristic | N | % |
|---|---|---|
| Age (years) | Mean=74.4 | SD=3.4 |
| Gender | ||
| Male | 17 | 34.0 |
| Female | 33 | 66.0 |
| Race | ||
| White | 41 | 82.0 |
| Black | 9 | 18.0 |
| Clinical Site | ||
| Wake Forest University | 18 | 36.0 |
| University CA, Davis | 10 | 20.0 |
| Johns Hopkins | 10 | 20.0 |
| University of Pittsburgh | 12 | 24.0 |
Abbreviation: SD = Standard Deviation.
