Table 1.
Risk ratios for the 7 lifestyle factors for AD and VaD, and shared variance within each factor
| Risk factor | Relative risk (95% CI) |
Communalityb, % | |
|---|---|---|---|
| AD | VaD | ||
| Diabetes mellitus | 1.46 (1.20–1.77) | 2.28 (1.94–2.66) | 50.9 |
| Midlife hypertension | 1.61 (l.16–2.24) | 1.59 (1.20–2.11) | 65.0 |
| Midlife obesity | 1.60 (1.34–1.92) | 1.33 (1.02–1.75)a | 43.7 |
| Physical inactivity | 1.82 (1.19–2.78) | 1.61 (1.09–2.38) | 49.0 |
| Depression | 1.65 (1.42–1.92) | 2.92 (1.87–4.56) | 37.4 |
| Smoking | 1.59 (1.15–2.20) | 1.26 (1.05–1.50) | 58.1 |
| Low educational attainment | 1.59 (1.35–1.86) | 2.75 (2.19–3.45) | 45.6 |
a
Overweight versus normal BMI groups in midlife.
b
The proportion of the variance in each risk factor shared with the other risk factors.