Table 1.
Demographic Characteristics of the Study Population
| Characteristic | No. (%) |
|---|---|
| Age | |
| Mean±SD | 57.90±9.6 |
| Median (range) | 57 (19–87) |
| Sex | |
| Male | 466 (37.6) |
| Female | 773 (62.4) |
| Race | |
| African-American | 876 (70.7) |
| Caucasian | 114 (9.2) |
| Others | 249 (20.1) |
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