Table 1.
Baseline characteristics, n (%).
| All participants | Dementia events over the 13-year follow-up | P value | ||
|---|---|---|---|---|
| Nonevents | Events | |||
| (n = 457,064) | (n = 400,032) | (n = 57,032) | ||
| Age at baseline, years | ||||
| Mean (SD) | 63 (9.9) | 61.8 (9.4) | 71.4 (8.7) | < 0.0001 |
| Sex | ||||
| Men | 227,448 (49.8) | 201,437 (50.4) | 26,011 (45.6) | < 0.0001 |
| Women | 229,616 (50.2) | 198,595 (49.6) | 31,021 (54.4) | |
| Duration of follow-up, years | ||||
| Mean (SD) | 10.8 (3.7) | 11.4 (3.4) | 7.1 (3.7) | < 0.0001 |
| Baseline comorbidity | ||||
| Hypertension | 207,256 (45.3) | 170,740 (42.7) | 36,516 (64.0) | < 0.0001 |
| Diabetes | 95,129 (20.8) | 78,329 (19.6) | 16,800 (29.5) | |
| Hyperlipidemia | 121,988 (26.7) | 103,123 (25.8) | 18,865 (33.1) | |
| Modified CCI* | ||||
| 0 | 372,606 (81.5) | 331,622 (82.9) | 40,984 (71.9) | < 0.0001 |
| 1 | 25,143 (5.5) | 20,650 (5.2) | 4493 (7.9) | |
| 2 | 13,475 (2.9) | 11,217 (2.8) | 2258 (4.0) | |
| 3 | 4882 (1.1) | 4019 (1.0) | 863 (1.5) | |
| ≥ 4 | 40,958 (9.0) | 32,524 (8.1) | 8434 (14.8) | |
| Number of townships | 338 | |||
*Modified CCI, which excluded dementia.