Table 4.
Incident rate and hazard ratio for dementia with PD in depression subgroups with cutoff age at 65.
| Group | Without PD | With PD | Crude HR (95% CI) | p | Adjusted HRb (95% CI) | p |
|---|---|---|---|---|---|---|
| Incident ratea | Incident ratea | |||||
| No depression | ||||||
| <65 | 0.7 | 9.1 | 12.56 (5.84–27.00) | <0.001 | 10.08 (4.67–21.76) | <0.001 |
| ≧65 | 14.8 | 44.8 | 3.10 (2.48–3.88) | <0.001 | 2.99 (2.39–3.74) | <0.001 |
|
| ||||||
| Depression | ||||||
| <65 | 1.1 | 4.6 | 4.29 (0.53–34.88) | 0.173 | 7.06 (0.83–60.24) | 0.074 |
| ≧65 | 22.8 | 32.6 | 1.43 (0.82–2.47) | 0.206 | 1.55 (0.89–2.71) | 0.120 |
Note. PD = Parkinson's disease, HR = hazard ratio, CI = confidence interval, n = case number, % = percentage, and p = p value. aPer 1000 person-years. bAdjusted HR: adjusted for age, gender, hypertension, diabetes mellitus, hyperlipidemia, and ischemic heart disease.