Table 1. Characteristics of the sample by cognitive status at baseline (n=385).
| Age (years), mean (SD) | Cognitively normal (n=211) | Subjective cognitive decline (n=174) | p-value | |
|---|---|---|---|---|
| 69.9 (7.3) | 68.5 (6.6) | 0.073* | ||
| Female, n (%) | 128 (60.7) | 125 (71.8) | 0.022† | |
| Race, n (%) | White | 156 (73.9) | 133 (76.4) | 0.316† |
| Black | 54 (25.6) | 38 (21.8) | ||
| Asian | 1 (0.5) | 3 (1.7) | ||
| Education (years), mean (SD) | 5.2 (4.8) | 6.1 (4.8) | 0.011* | |
| Diabetes, n (%) | 63 (29.9) | 50 (28.7) | 0.810† | |
| Hypertension, n (%) | 149 (70.6) | 121 (69.5) | 0.818† | |
| Coronary artery disease, n (%) | 15 (7.1) | 22 (12.6) | 0.067† | |
| Stroke, n (%) | 3 (1.4) | 8 (4.6) | 0.063† | |
| Psychiatric disorder, n (%) | 51 (24.2) | 74 (42.5) | <0.001† | |
| Smoking, n (%) | Never | 164 (77.7) | 146 (83.9) | 0.291† |
| Current | 29 (13.7) | 16 (9.2) | ||
| Former | 18 (8.5) | 12 (6.9) | ||
| Alcohol use, n (%) | No use or light use | 161 (76.3) | 143 (82.2) | 0.143† |
| Moderate use | 37 (17.5) | 23 (13.2) | ||
| Current or previous abuse | 13 (6.2) | 8 (4.6) | ||
Abbreviations: SD: standard deviation.
*
Notes: Mann-Whitney Test;
†
Pearson's Chi-square Test.