Table 2.
Insomnia symptoms and incidence rate of dementia.
| Exposure | N of dementia incidence (% in group) | Model 1 | Model 2 | ||
|---|---|---|---|---|---|
| HR (95% CI) | P | HR (95% CI) | P | ||
| Status of insomnia symptoms | |||||
| Non-insomnia | 1,100 (6.0) | 1 | 1 | ||
| Have insomnia symptom | 287 (7.9) | 1.28 (1.12, 1.46) | <0.001 | 1.18 (1.03, 1.35) | 0.018 |
| Symptom of insomnia | |||||
| Non-insomnia | 1,100 (6.0) | 1 | 1 | ||
| Other symptoms than DIS | 172 (7.0) | 1.20 (1.02, 1.41) | 0.028 | 1.12 (0.95, 1.32) | 0.173 |
| DIS | 115 (9.5) | 1.40 (1.15, 1.70) | 0.001 | 1.24 (1.02, 1.52) | 0.031 |
| Non-insomnia | 1,100 (6.0) | 1 | 1 | ||
| Other symptoms than DMS | 132 (7.6) | 1.33 (1.11, 1.59) | 0.002 | 1.25 (1.04, 1.50) | 0.017 |
| DMS | 155 (8.1) | 1.24 (1.05, 1.47) | 0.013 | 1.11 (0.94, 1.33) | 0.221 |
| Non-insomnia | 1,100 (6.0) | 1 | 1 | ||
| Other symptoms than EMA | 133 (8.9) | 1.36 (1.14, 1.63) | 0.001 | 1.25 (1.04, 1.51) | 0.016 |
| EMA | 154 (7.1) | 1.21 (1.02, 1.43) | 0.030 | 1.11 (0.93, 1.32) | 0.248 |
Analysed by Cox proportional hazards regression. Model 1, adjusted for age and sex; Model 2, adjusted for Model 1 and education level, depression, social isolation, body mass index, level of physical activity, smoking status, alcohol consumption, hypertension and diabetes.