Table 1.
Baseline characteristics of the study population (n = 1012) by cognition
| Characteristics | Cognitive status |
||
|---|---|---|---|
| Cognitively intact (n = 833) |
CIND (n = 179) |
p | |
| Age, yrs, mean (SD) | 73.6 (6.9) | 73.5 (6.5) | 0.953 |
| Female | 432 (51.9) | 118 (65.9) | <0.001 |
| Educational level, yrs | |||
| 0–3 | 135 (16.2) | 60 (33.7) | <0.001 |
| 4–5 | 425 (51.0) | 92 (51.7) | 0.872 |
| 6–8 | 158 (19.0) | 21 (11.8) | <0.02 |
| 9+ | 115 (13.8) | 5 (2.8) | <0.001 |
| Occupation | |||
| Blue-collar workers | 156 (18.7) | 46 (25.7) | <0.03 |
| Farmers | 177 (21.2) | 47 (26.3) | 0.143 |
| Craftsmen | 256 (30.7) | 54 (30.2) | 0.882 |
| White collar workers/technicians | 179 (21.5) | 24 (13.4) | <0.01 |
| Academic professions/self-employed | 36 (4.3) | 1 (0.6) | <0.01 |
| Job stress (Likert scale) mean (SD) |
4.2 (3.1) | 3.9 (2.9) | 0.352 |
| % Likert >5 | 253 (31.6) | 44 (25.7) | 0.131 |
| Job physical demand (Likert scale) mean (SD) |
5.0 (3.1) | 5.7 (3.1) | <0.0091 |
| % Likert >5 | 336 (41.9) | 88 (51.5) | <0.02 |
| Economic conditions | |||
| Lifetime financial crisis | 335 (40.4) | 80 (44.7) | 0.285 |
| Late-life poor finances | 66 (8.1) | 22 (12.9) | <0.04 |
| Health status | |||
| Hypertension | 340 (44.4) | 70 (44.0) | 0.933 |
| Stroke | 30 (3.9) | 11 (6.9) | 0.09 |
| Diabetes mellitus | 86 (11.2) | 15 (9.4) | 0.513 |
| Depression (CES-D scale), mean (SD) | 11.1 (3.7) | 11.7 (4.2) | <0.03 |
| Smoking, current | 134 (16.1) | 27 (15.1) | 0.739 |
| Alcohol drinking >7 glasses/week | 381 (45.7) | 68 (38.0) | <0.05 |
| CRP (µg/mL), median (range) | 2.6 (1.2–5.3) | 2.6 (1.3–6.3) | 0.164 |
| APOEε4 | 123 (16.1) | 21 (13.1) | 0.342 |