Table 2 Dementia’s association with socioeconomic status before and after adjusting for lifestyle factors and medical history
| Â | Â | Model; odds ratio (95% confidence interval) | ||||
|---|---|---|---|---|---|---|
Crude odds | 1 | 2 | 3 | 4 | 5 | |
Educational attainment | ||||||
  ≤ 6 years | 8.85 (5.26–14.87) | 3.27 (1.84–5.81) |  | 3.23 (1.79–5.84) | 3.45 (1.88–6.34) | 3.56 (1.90–6.66) |
 7–9 years | 1.12 (0.74–1.69) | 0.92 (0.59–1.43) |  | 0.89 (0.56–1.41) | 0.93 (0.58–1.49) | 0.92 (0.57–1.50) |
  ≥ 10 years | 1.00 | 1.00 |  | 1.00 | 1.00 | 1.00 |
Occupation | ||||||
 White collar | 1.00 |  | 1.00 | 1.00 | 1.00 | 1.00 |
 Blue collar | 1.61 (1.06–2.46) |  | 1.26 (0.80–1.98) | 1.16 (0.72–1.90) | 1.12 (0.68–1.84) | 1.14 (0.68–1.90) |
 Both | 1.32 (0.76–2.28) |  | 1.33 (0.74–2.39) | 1.29 (0.71–2.36) | 1.25 (0.67–2.31) | 1.07 (0.56–2.02) |
 Other | 2.65 (1.40–4.99) |  | 1.90 (0.94–3.84) | 1.96 (0.96–4.01) | 1.74 (0.83–3.61) | 1.66 (0.78–3.53) |
Age | ||||||
 65–74 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
 75–84 | 4.55 (2.59–7.99) | 4.14 (2.34–7.33) | 4.51 (2.56–7.94) | 4.08 (2.30–7.25) | 3.65 (2.04–6.54) | 3.55 (1.94–6.49) |
  ≥ 85 | 19.03 (10.79–33.59) | 14.61 (8.01–26.65) | 19.11 (10.72–34.07) | 14.21 (7.77–25.99) | 12.61 (6.78–23.46) | 12.35 (6.41–23.79) |
Sex | ||||||
 Men | 0.92 (0.64–1.32) | 1.34 (0.90–2.01) | 1.31 (0.87–1.96) | 1.42 (0.94–2.17) | 3.05 (1.60–5.83) | 2.71 (1.39–5.27) |
 Women | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Alcohol consumption | ||||||
 Current drinker | 0.41 (0.25–0.67) |  |  |  | 0.52 (0.28–0.97) | 0.61 (0.32–1.16) |
 Former drinker | 2.94 (1.85–4.69) |  |  |  | 2.61 (1.47–4.65) | 2.52 (1.39–4.59) |
 Nondrinker | 1.00 |  |  |  | 1.00 | 1.00 |
Smoking | ||||||
 Current smoker | 0.39 (0.17–0.91) |  |  |  | 0.40 (0.15–1.09) | 0.50 (0.18–1.36) |
 Former smoker | 0.76 (0.50–1.16) |  |  |  | 0.38 (0.20–0.73) | 0.36 (0.19–0.70) |
 Nonsmoker | 1.00 |  |  |  | 1.00 | 1.00 |
Diabetes | ||||||
 Yes | 1.96 (1.29–2.98) |  |  |  |  | 2.03 (1.23–3.35) |
 No | 1.00 |  |  |  |  | 1.00 |
Parkinson’s disease | ||||||
 Yes | 5.54 (2.07–14.81) |  |  |  |  | 3.84 (1.11–13.37) |
vNo | 1.00 | Â | Â | Â | Â | 1.00 |
Stroke | ||||||
 Yes | 2.93 (1.80–4.76) |  |  |  |  | 2.59 (1.45–4.63) |
 No | 1.00 |  |  |  |  | 1.00 |
Angina pectoris/cardiovascular disease | ||||||
 Yes | 2.64 (1.62–4.31) |  |  |  |  | 1.81 (1.02–3.20) |
 No | 1.00 |  |  |  |  | 1.00 |
Dental disease/oral disease | ||||||
 Yes | 0.55 (0.28–1.07) |  |  |  |  | 0.55 (0.26–1.15) |
 No | 1.00 |  |  |  |  | 1.00 |
Bone fracture | ||||||
 Yes | 2.56 (1.70–3.86) |  |  |  |  | 1.56 (0.95–2.55) |
 No | 1.00 |  |  |  |  | 1.00 |