Table 3.
Final regression model for dementia prevalence at baseline.
| Variable | All dementia | Dementia due to AD | ||
|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Sex (female) | 1.45 (0.90–2.35) | NS | 1.65 (0.93–2.92) | NS |
| Age | 2.40 (2.02–2.85) | <0.001 | 1.20 (1.16–1.24) | <0.001 |
| Education | ||||
| Illiterate | 3.06 (1.21–7.77) | <0.05 | 2.38 (0.79–7.15) | NS |
| Can read and write | 1.38 (0.54–3.53) | NS | 1.13 (0.37–3.45) | NS |
| Primary school | 1.63 (0.60–2.41) | NS | 1.47 (0.47–4.66) | NS |
| ≥secondary school | 1 (reference) | 1 (reference) | ||
| Depression | ||||
| nD | 1 (reference) | 1 (reference) | ||
| pD | 1.52 (0.54–4.31) | NS | 0.45 (0.06–3.40) | NS |
| prD | 1.84 (1.01–3.35) | <0.05 | 1.98 (0.98–3.99) | NS |
| prpD | 2.73 (1.08–6.87) | <0.05 | 3.98 (1.48–10.71) | <0.005 |
| Hypertension | 0.63 (0.41–0.96) | <0.05 | 0.64 (0.39–1.06) | NS |
| Stroke | 4.11 (2.14–7.88) | <0.001 | 0.20 (0.02–1.60) | NS |
Fully adjusted model. The variables that did not enter or did not remain in the model were diabetes, heart disease, and hypercholesterolemia.
AD: Alzheimer's disease (without vascular component); nD: never depression; pD: past depression; prD: present depression; prpD: present and past depression; NS: statistically not significant (P > 0.05).