Table 1.
Participant characteristics at baseline
| Characteristic (n = 354) | Mean, SD, or N, % |
|---|---|
| Age in years | 80.5, 7.1 |
| Female (N, %) | 272, 76.8% |
| Non‐Hispanic Whites (N, %) | 335, 94.6% |
| Education in years | 15.7, 3.2 |
| WMH volume (% ICV) | 0.94% (1.03) |
| WMH volume (% ICV after logarithm) a | −0.222, 0.408 |
| Total gray volume (tenths of % ICV) | 338.1, 41.8 |
| MMSE at baseline (Mean, SD) | 28.7, 1.3 |
| Global cognition at baseline (Mean, SD) | 0.41, 0.43 |
| Episodic memory at baseline (Mean, SD) | 0.51, 0.54 |
| Semantic memory at baseline (Mean, SD) | 0.36, 0.55 |
| Working memory at baseline (Mean, SD) | 0.24, 0.65 |
| Perceptual speed at baseline (Mean, SD) | 0.34, 0.73 |
| Visuospatial ability at baseline (Mean, SD) | 0.43, 0.65 |
| Vascular diseases (N, %) | |
| None | 256, 72.5% |
| 1 | 74, 21.0% |
| 2 | 21, 6.0% |
| 3 | 2, 0.6% |
| Vascular risk factors (N, %) | |
| None | 80, 22.6% |
| 1 | 162, 45.7% |
| 2 | 99, 28.0% |
| 3 | 13, 3.7% |
ICV, intracranial volume, SD, Standard deviation; WMH, white matter hyperintensities
a
log10 transformed.