Table 1. Descriptive Data for the Participants Included in This Study.
| Characteristic | Participants, No. (%) (N = 303) |
|---|---|
| Age, mean (SD), y | 73.16 (5.19) |
| Women | 181 (60) |
| Men | 122 (40) |
| Education, mean (SD), y | 12.80 (4.80) |
| Diagnostic categorya | |
| NC | 248 (81.85) |
| MCI | 40 (13.20) |
| AD | 2 (0.66) |
| Race and ethnicity | |
| White | 96 (31.6) |
| Black | 113 (37.2) |
| Hispanic | 94 (30.9) |
| APOE ε4 allele status | |
| Noncarrier | 202 (66.7) |
| Carrier | 101 (33.3) |
| WMH volume, mean (SD), cm3 | |
| Total | 4.81 (5.36) |
| Frontal | 2.04 (2.79) |
| Temporal | 0.31 (0.14) |
| Parietal | 1.30 (1.96) |
| Occipital | 0.40 (0.49) |
| Entorhinal cortical thickness, mean (SD), mm | 3.30 (0.31) |
Abbreviations: AD, Alzheimer disease (clinical); MCI, mild cognitive impairment; NC, normal control; WMH, white matter hyperintensities.
a
Thirteen participants are missing from the diagnostic evaluation.