| Model I | Model II | Model III | ||||||
---|---|---|---|---|---|---|---|---|---|
 | OR | 95 % CI |  | OR | 95 % CI |  | OR | 95 % CI |  |
Chronic Diseases | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Diabetes (no) |  |  |  | 2.63 | 1.75–3.95 | *** | 2.63 | 1.75–3.95 | *** |
 Heart diseases (no) |  |  |  | 1.71 | 1.14–2.56 | ** | 1.72 | 1.15–2.58 | ** |
 Gastric ulcer (no) |  |  |  | 1.97 | 1.37–2.84 | *** | 1.94 | 1.35–2.80 | *** |
 COPD (no) |  |  |  | 2.57 | 1.67–3.95 | *** | 2.54 | 1.66–3.92 | *** |
APOE4allele (no) |  |  |  | 1.55 | 1.01–2.39 | * | 1.58 | 1.02–2.41 | * |
Stress | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Financial difficulty (no) | 1.69 | 1.19–2.40 | ** | 1.77 | 1.23–2.56 | ** | 1.76 | 1.22–2.54 | ** |
 Having an earthquake-damaged house (no) | 1.56 | 1.01–2.43 | * | 1.50 | 0.94–2.39 |  | 1.50 | 0.94–2.39 |  |
Behaviors | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Smoking (no) | 0.65 | 0.41–1.01 |  | 0.65 | 0.41–1.03 |  | 0.65 | 0.41–1.03 |  |
 Daily alcohol use (no) | 1.00 | 0.51–1.97 |  | 1.05 | 0.53–2.09 |  | 1.01 | 0.51–2.01 |  |
 Vegetable and fruit diet (no) | 0.78 | 0.57–1.07 |  | 0.75 | 0.54–1.05 |  | 0.76 | 0.54–1.06 |  |
 Daily milk intake (no) | 1.12 | 0.80–1.57 |  | 1.13 | 0.80–1.61 |  | 1.15 | 0.81–1.63 |  |
 Doing exercise 2–5 times/week (<=1 time) | 0.78 | 0.51–1.18 |  | 0.70 | 0.46–1.08 |  | 0.72 | 0.47–1.11 |  |
 Doing exercise 5+ times/week (<1 time) | 0.56 | 0.39–0.79 | ** | 0.55 | 0.38–0.80 | ** | 0.56 | 0.39–0.82 | ** |
Controls | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Women (men) | 0.95 | 0.64–1.41 |  | 0.93 | 0.62–1.41 |  | 0.95 | 0.63–1.43 |  |
 Ages > =70 (<70) | 1.06 | 0.74–1.51 |  | 1.11 | 0.76–1.62 |  | 1.10 | 0.76–1.60 |  |
 Currently married (no) | 0.94 | 0.66–1.33 |  | 0.95 | 0.66–1.39 |  | 0.97 | 0.67–1.40 |  |
 Ethnicity Hakka (Fujian) | 1.09 | 0.67–1.78 |  | 1.21 | 0.72–2.01 |  | 1.22 | 0.73–2.04 |  |
 Ethnicity Mainlander (Fujian) | 1.40 | 0.87–2.24 |  | 1.23 | 0.75–2.03 |  | 1.27 | 0.77–2.08 |  |
 Rural (urban) | 0.95 | 0.67–1.36 |  | 0.96 | 0.67–1.40 |  | 0.96 | 0.67–1.40 |  |
 Primary schooling (none) | 0.93 | 0.64–1.36 |  | 0.92 | 0.62–1.37 |  | 0.92 | 0.62–1.37 |  |
 Secondary schooling (none) | 0.59 | 0.34–1.03 |  | 0.58 | 0.33–1.05 |  | 0.58 | 0.33–1.04 |  |
 College degrees or higher (none) | 0.87 | 0.38–2.01 |  | 0.87 | 0.36–2.06 |  | 0.86 | 0.36–2.05 |  |
 Clerical (white collar workers) | 1.58 | 0.67–3.72 |  | 1.60 | 0.65–3.90 |  | 1.66 | 0.68–4.05 |  |
 Blue-collar workers (white collar workers) | 1.61 | 0.67–3.89 |  | 1.59 | 0.63–4.00 |  | 1.62 | 0.64–4.09 |  |
 Farmers (white collar workers) | 1.25 | 0.51–3.06 |  | 1.30 | 0.51–3.32 |  | 1.35 | 0.53–3.46 |  |
 IADL disabled (no) | 3.13 | 2.20–4.47 | *** | 2.65 | 1.83–3.84 | *** | 2.67 | 1.85–3.87 | *** |
 BMI >23 (<=23) | 1.27 | 0.72–2.52 |  | 1.47 | 0.81–2.66 |  | 1.45 | 0.80–2.61 |  |
Interaction Effect | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Women*Gastric ulcer |  |  |  |  |  |  | 2.63 | 1.24–5.58 | * |
- Log likelihood | 521.2*** | 488.0*** | 481.1*** |