Table 3. Unadjusted and Combined Population-Attributable Risk for 8 Modifiable Dementia Risk Factors Overall in the US, 2018.
| Risk factor | Relative risk (95% CI) | Uniqueness, % | Population-attributable risk, % (95% CI) |
|---|---|---|---|
| Hearing loss | 1.4 (1.1-1.7)13 | 86.7 | 2.3 (2.2-2.3) |
| Current smoking | 1.4 (1.2-1.6)14 | 46.9 | 6.0 (5.9-6.1) |
| Midlife hypertensiona | 1.3 (1.1-1.4)14 | 22.1 | 8.8 (8.7-8.9) |
| Diabetes | 1.7 (1.5-1.9)14 | 43.2 | 7.3 (7.1-7.4) |
| Depression | 1.5 (1.1-2.0)14 | 74.1 | 8.5 (8.4-8.6) |
| Low education | 2.0 (1.6-2.6)14 | 70.8 | 11.7 (11.5-12.0) |
| Physical inactivity | 1.6 (1.3-1.8)14 | 67.5 | 11.8 (11.7-11.9) |
| Midlife obesity | 1.6 (1.1-2.3)14 | 66.2 | 17.7 (17.5-18.0) |
| Combined | NA | NA | 36.9 (36.5-37.3) |
a
Midlife hypertension data were collected in 2017 because information on hypertension was not recorded in the 2018 survey.