Table 1.
Demographic Characteristics of the Study Participants
| Characteristic | All Subjects (n = 211) | Younger Subjects (n = 104) | Older Subjects (n = 107) |
|---|---|---|---|
| Sex | |||
| Male | 91 (43) | 45 (43) | 46 (43) |
| Female | 120 (57) | 59 (57) | 61 (57) |
| Ethnicity | |||
| Non-Hispanic | 202 (96) | 96 (92) | 106 (99) |
| Hispanic | 9 (4) | 8 (8) | 1 (1) |
| Race | |||
| Asian | 13 (6) | 13 (13) | 0 |
| Black/African American | 18 (9) | 13 (13) | 5 (5) |
| White | 176 (83) | 74 (71) | 102 (95) |
| Multiracial | 2 (1) | 2 (2) | 0 |
| Other/unknown | 2 (1) | 2 (2) | 0 |
| Age, y | 57.4 ± 19.6 | 40.9 ± 14.6 | 73.3 ± 5.8 |
Data are no. (%) of subjects, or mean ± SD. Younger subjects were aged 18–64 years, and older subjects were aged ≥65 years.