Table 1.
Baseline characteristics by race (n=2457). Values are numbers (percentages) unless stated otherwise
| Characteristic | White (n=1438) | Black (n=1019) | P value |
|---|---|---|---|
| Mean (SD) age, years | 73.7 (2.9) | 73.4 (2.9) | 0.004 |
| Female sex | 669 (46.5) | 564 (55.3) | <0.001 |
| Apolipoprotein E e4 | 339 (23.6) | 365 (35.8) | <0.001 |
| Stroke | 110 (7.7) | 90 (8.8) | 0.29 |
| Myocardial infarction | 172 (12.0) | 115 (11.3) | 0.61 |
| Hypertension | 781 (54.3) | 724 (71.1) | <0.001 |
| Depression | 59 (4.1) | 36 (3.5) | 0.47 |
| Diabetes | 281 (19.5) | 302 (29.6) | <0.001 |
| Mean (SD) body mass index (kg/m2) | 26.5 (4.1) | 28.6 (5.4) | <0.001 |
| >1 alcoholic drink/day | 135 (9.4) | 54 (5.3) | <0.001 |
| Current smoker | 90 (6.3) | 169 (16.6) | <0.001 |
| Mean* (SD) physical activity | 4.2 (0.8) | 4.1 (0.9) | <0.001 |
| Education: | |||
| <High school | 170 (11.8) | 434 (42.6) | <0.001 |
| High school graduate/technical school | 497 (34.6) | 314 (30.8) | |
| >High school | 771 (53.6) | 271 (26.6) | |
| Literacy† <9th grade | 323 (22.5) | 588 (57.7) | <0.001 |
| Family income ($): | |||
| <$10 000 | 56 (3.9) | 258 (25.3) | <0.001 |
| >$10 000-49 000 | 1039 (72.3) | 708 (69.5) | |
| ≥$50 000 | 343 (23.9) | 53 (5.2) | |
| Financial inadequacy | 96 (6.7) | 206 (20.2) | <0.001 |
| Mean (SD) modified mini-mental state examination score | 92.9 (5.8) | 86.3 (9.7) | <0.001 |
*Total kcal/kg/week, geometric mean (log transformed for normality).
†Measured at year 3.