Table 1.
Baseline characteristics of study subjects
| Variable | Alzheimer’s disease | No Alzheimer’s disease | p-value | ||
|---|---|---|---|---|---|
| (n = 5,906) | (n = 201,681) | ||||
| No. | % | No. | % | ||
| Age (year) | 79.36 ± 7.14 | 74.87 ± 6.89 | <.0001 | ||
| Sex | 0.1496 | ||||
| Men | 2,755 | 46.65 | 95,995 | 47.60 | |
| Women | 3,151 | 53.35 | 105,686 | 52.40 | |
| Income (NT$) | <.0001 | ||||
| Dependent | 2,472 | 41.86 | 84,740 | 42.02 | |
| 1–20,000 | 1,518 | 25.70 | 44,260 | 21.95 | |
| 20,001-40,000 | 1,866 | 31.59 | 69,890 | 34.65 | |
| >40,000 | 50 | 0.85 | 2,791 | 1.38 | |
| Region | <.0001 | ||||
| Area 1(Taipei) | 1,659 | 28.09 | 65,573 | 32.51 | |
| Area 2 (Northern) | 868 | 14.70 | 26,761 | 13.27 | |
| Area 3 (Central) | 1256 | 21.27 | 36,693 | 18.19 | |
| Area 4 (Southern) | 1,247 | 21.11 | 34,690 | 17.20 | |
| Area 5 (Kao-Ping) | 739 | 12.51 | 32,141 | 15.94 | |
| Area 6 (Eastern) | 137 | 2.32 | 5,823 | 2.89 | |
| Amalgam filling | 0.2274 | ||||
| None | 5,046 | 85.44 | 171,162 | 84.87 | |
| Yes | 860 | 14.56 | 30,519 | 15.13 | |
Age was mean ± S.E