Table 2. Descriptive information about demographics for all groups.
| HE (N = 51) | MCI (N = 24) | Dementia (N = 6) | CI (N = 30) | |
|---|---|---|---|---|
| Age, mean (SD) | 70.02 (7.34) | 76.63 (7.52) | 73.33 (10.58) | 75.97 (8.12) |
| Sex, n (%) | ||||
| Female | 36 (70.6) | 9 (37.5) | 4 (66.7) | 13 (43.30) |
| Race, n (%) | ||||
| Caucasian | 38 (74.5) | 18 (75) | 5 (83.3) | 23 (76.7) |
| African American | 13 (25.5) | 4 (16.7) | 1 (16.7) | 5 (16.7) |
| Asian | 0 (0) | 1 (4.2) | 0 (0) | 1 (3.3) |
| Native Indian | 0 (0) | 1 (4.2) | 0 (0) | 1 (3.3) |
| Education, mean (SD) | 16.28 (2.21) | 15.92 (3.61) | 14.67 (3.26) | 15.67 (3.53) |
| MMSE, mean (SD) | 29.33 (1.39)a | 25.04 (4.71) | 23.50 (2.51) | 24.73 (4.37) |
| % Retention Score | NA | 39.42 (27.25) | 25 (35.36) | 38.04 (27.38)b |
| Awareness, mean (SD) | NA | 2.71 (0.85) | 3.00 (.89) | 2.78 (0.85) |
| Awareness, n % | ||||
| Full awareness (4) | NA | 3 (12.5) | 2 (33.3) | 5 (16.7) |
| Moderate awareness (3) | NA | 11 (45.8) | 2 (33.3) | 12 (43.3) |
| Shallow Awareness (2) | NA | 5 (20.8) | 2 (33.3) | 7 (23.3) |
Note: HE = Healthy Elder; MCI = Mild Cognitive Impairment; Dementia = Probable and Possible AD; CI = Cognitively Impaired; MMSE = Mini-Mental State Examination; NA = Not Applicable.
an (for HE) = 15 and n (for CI) = 45; Significant difference across HE versus CI group.
bn (for CI) = 21.