Table 1.
Sample characteristics.
| African American | Hispanic | White | Total | |
|---|---|---|---|---|
| n | 121 | 111 | 212 | 444 |
| Number of Visits – M (SD) | 5.1 (2.4) | 5.8 (2.8) | 5.1 (2.7) | 5.3 (2.7) |
| Baseline MRI Available; n (%) | 110 (90.9%) | 96 (86.5%) | 186 (87.7%) | 392 (88.3%) |
| Change MRI Available; n (%) | 64 (52.9%) | 78 (70.3%) | 140 (66.0%) | 282 (63.5%) |
| Gender - Female; n (%) | 87 (71.9%) | 71 (64.0%) | 102 (48.1%) | 260 (58.6%) |
| Age - M (SD) | 75.2 (6.9) | 72.5 (6.6) | 75.2 (7.1) | 74.5 (7.0) |
| Education - M (SD) | 13.3 (3.3) | 8.6 (5.3) | 14.8 (3.3) | 12.8 (4.6) |
| Recruitment Source – Clinic; n (%) | 14 (11.6%) | 13 (11.7%) | 115 (54.2%) | 142 (32.0%) |
| Global CDR – M (SD) | 0.5 (1.3) | 0.4 (1.1) | 0.5 (1.2) | 0.5 (1.2) |
| Diagnosis - Normal; n (%) | 68 (56.7%) | 72 (66.7%) | 82 (39.0%) | 222 (50.7%) |
| Diagnosis - MCI; n (%) | 37 (30.8%) | 17 (15.7%) | 105 (50.0%) | 159 (36.3%) |
| Diagnosis - Demented; n (%) | 15 (12.5%) | 19 (17.6%) | 23 (11.0%) | 57 (13.0%) |
| Possible AD; n (%) | 1 (6.7%) | 2 (10.5%) | 3 (20.0%) | 6 (10.5%) |
| Probable AD; n (%) | 10 (66.7%) | 13 (68.4%) | 16 (69.6%) | 39 (68.4%) |
| Probable VaD; n (%) | 1 (6.7%) | 1 (5.3%) | 0 (0.0%) | 2 (3.5%) |
| Possible DLB; n (%) | 0 (0.0%) | 2 (10.5%) | 1 (4.3%) | 3 (5.3%) |
| FTD; n (%) | 0 (0.0%) | 0 (0.0%) | 1 (4.3%) | 1 (1.8%) |
| Mixed; n (%) | 3 (20.0%) | 0 (0.0%) | 2 (8.7%) | 5 (8.8%) |
| Missing; n (%) | 0 (0.0%) | 1 (5.3%) | 0 (0.0%) | 1 (1.8%) |
| APOE ε4 Positive; n (%) | 54 (44.6%) | 26 (23.4%) | 101 (47.6%) | 181 (40.8%) |
Note. CDR = Clinical Dementia Rating (baseline score); MCI = mild cognitive impairment; AD = Alzheimer’s disease; VaD = vascular dementia; DLB = dementia with Lewy bodies; FTD = frontotemporal dementia; APOE = apolipoprotein E.