Table 2.
Logistic regression analysis of factors associated with Alzheimer’s disease
| Variable | Logistic regression model | |
|---|---|---|
| OR | 95 % CI | |
| Amalgam fillings | ||
| None | 1.000 | - |
| Yes | 1.105 | 1.025-1.190 |
| Age | 1.087 | 1.083-1.090 |
| Sex | ||
| Female | 1.031 | 0.976-1.088 |
| Male | 1.000 | - |
| Income (NT$) | ||
| Dependent | 1.374 | 1.287-1.466 |
| 1–20,000 | 1.287 | 1.195-1.386 |
| 20,001-40,000 | 1.000 | - |
| >40,000 | 1.175 | 0.883-1.565 |
| Region | ||
| Area 1 (Taipei) | 0.735 | 0.675-0.800 |
| Area 2 (Northern) | 1.000 | - |
| Area 3 (Central) | 1.127 | 1.032-1.232 |
| Area 4 (Southern) | 1.226 | 1.120-1.341 |
| Area 5 (Kao-Ping) | 0.734 | 0.672-0.821 |
| Area 6 (Eastern) | 0.732 | 0.609-0.880 |
Odds ratio was adjusted for age, gender, insurance level, and residential region
OR odds ratio, CI confidence interval