Table 1.
Baseline characteristics of the cohort.
| Characteristic | Frequency | |
|---|---|---|
| Number of participants, No. (%) | 1290 (36.9) | |
| Age, mean (SD), y | 64.5 (8.4) | |
| Body mass index, mean (SD), kg/m2 | 28.0 (4.8) | |
| Male, No. (%) | 510 (39.5) | |
| Race-ethnicity: | ||
| Non-Hispanic white, No. (%) | 191 (14.8) | |
| Non-Hispanic black, No. (%) | 223 (17.3) | |
| Hispanic, No. (%) | 847 (65.7) | |
| Other, No. (%) | 29 (2.3) | |
| Received at least high school education, No. (%) | 592 (45.9) | |
| Marital status, No. (%) married | 543 (42.1) | |
| Health insurance, NO. (%) | ||
| Medicaid or no insurance | 613 (47.5) | |
| Medicare or private insurance | 677 (52.5) | |
| Hypertension | 861 (66.7) | |
| Alcohol consumption: | ||
| Never drank | 264 (20.5) | |
| Past drinker | 256 (19.8) | |
| Light drinker | 163 (12.6) | |
| Moderate drinker | 530 (41.1) | |
| Intermediate drinker | 49 (3.8) | |
| Heavy drinker | 28 (2.2) | |
| Physical activity | ||
| None | 564 (44.3) | |
| Any | 710 (55.7) | |
| Diabetes mellitus: | ||
| Smoking: | ||
| Never | 245 (19.0) | |
| Former | 612 (47.4) | |
| Current | 496 (38.5) | |
| Hypercholesterolemia | 797 (61.8) | |
| History of coronary heart disease | 177 (13.7) | |
| Hamilton depression scale score, mean (SD) | 3.1 (3.8) | |
| Mini mental state score, mean (SD) | 26.7 (3.3) | |
| Number of people known well enough to visit with | ||
| in their homes: | ||
| None | 36 (2.8) | |
| 1 or 2 | 124 (9.6) | |
| 3 or 4 | 263 (20.4) | |
| 5 or more | 867 (67.2) | |
| Regional white matter hyperintensity volume, as % of total cranial volume, mean (SD) | Left | Right |
| Frontal lobe | 0.051 (0.064) | 0.058 (0.069) |
| Occipital lobe | 0.005 (0.006) | 0.005 (0.008) |
| Parietal lobe | 0.018 (0.026) | 0.023 (0.031) |
| Temporal lobe | 0.017 (0.014) | 0.017 (0.028) |
| Anterior periventricular | 0.112 (0.154) | 0.109 (0.150) |
| Posterior periventricular | 0.150 (0.210) | 0.154 (0.205) |