Table 1.
Characteristics of Older Adults without Dementia or Mild Cognitive Impairment (N = 262)
| Femalesa | Malesb | Totalc | ||||
|---|---|---|---|---|---|---|
| Characteristic | M/N | SD/% | M/N | SD/% | M/N | SD/% |
| Age (years at time of MRI scan) | 80.7 | 7.3 | 81.7 | 6.7 | 80.9 | 7.2 |
| Race (percent white) | 189 | 94.5% | 60 | 96.8% | 249 | 95.0% |
| Education (number of years completed)*** | 15.0 | 2.7 | 16.5 | .5 | 15.4 | 1.1 |
| Income (self-report level range 1–10)** | 7.2 | 2.3 | 8.3 | 1.9 | 7.5 | 2.3 |
| Depressive symptoms (percent with more depressive symptoms)* | 82 | 41.0% | 16 | 25.8% | 98 | 37.4% |
| BMI (kg/m2) | 26.9 | 5.3 | 27.1 | 4.0 | 27.0 | 5.0 |
| Physical disability (activities of daily living) | 0.7 | 1.4 | 0.7 | 1.4 | .7 | 1.4 |
| Total daily lifestyle physical activity | 0.03 | 1.0 | −0.08 | 1.1 | <.01 | 1.0 |
Note. BMI = body mass index; MRI = magnetic resonance imaging.
a n = 200. bn = 62. cn = 262.
*p < .05, **p < .01, ***p < .001 (for t-tests comparing females vs. males).