Table 2.
Baseline characteristics
| Characteristics | Total | Men | Women | p valuea |
|---|---|---|---|---|
| n = 1129 | n = 487 | n = 642 | ||
| Age, mean (SD) | 75.2 (7.4) | 74.2 (7.0) | 75.9 (7.7) | < 0.001 |
| Partner status, n (%) with partner | 674 (59.7) | 384 (78.9) | 290 (45.2) | < 0.001 |
| Educational level, years, mean (SD) | 5.3 (3.3) | 6.2 (3.6) | 4.7 (2.9) | < 0.001 |
| Smoking, n (%) current smoker | 158 (14.0) | 103 (21.1) | 55 (8.6) | < 0.001 |
| ADL disabilities, 0–6, mean (SD) | 0.2 (1.0) | 0.2 (0.9) | 0.3 (1.0) | 0.21 |
| CES-D score, 0–60, mean (SD) | 13.1 (8.8) | 9.9 (7.3) | 15.6 (9.0) | < 0.001 |
| MMSE score, 0–30, mean (SD) | 24.3 (4.9) | 25.2 (4.4) | 23.7 (5.2) | < 0.001 |
| FI score, 0–1, median (IQR) | 0.13 (0.08–0.21) | 0.10 (0.07–0.17) | 0.14 (0.10–0.24) | < 0.001 |
| FI cut-offs, n (%) | ||||
| ≥ 0.15 | 451 (39.9) | 144 (29.6) | 307 (47.8) | < 0.001 |
| ≥ 0.20 | 301 (26.7) | 93 (19.1) | 208 (32.4) | < 0.001 |
| ≥ 0.25 | 214 (19.0) | 62 (12.7) | 152 (23.7) | < 0.001 |
| ≥ 0.30 | 154 (13.6) | 47 (9.7) | 107 (16.7) | < 0.01 |
| ≥ 0.35 | 117 (10.4) | 40 (8.2) | 77 (12.0) | < 0.05 |
aBased on t test, Chi-square test, or Mann–Whitney test