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Table 3 PAR of dementia for each risk factor and number of cases attributable in 2010

From: Proportion of dementia in Australia explained by common modifiable risk factors

Risk factor Prevalence of risk factor PAR % (95% CI) Number of attributable cases in 2010 (95% CI)
Midlife obesity 32.0 17.0 (9.8–24.2) 41,222 (23,795–58,788)
Physical inactivity 56.0 17.9 (8.2–27.3) 43,468 (19,941–66,162)
Smoking 16.1 4.3 (–0.2 to 8.8) 10,460 (–391 to 21,362)
Low educational attainment 24.0 14.7 (11.1–18.7) 35,730 (26,906–45,410)
Diabetes mellitus 5.4 2.4 (1.1–4.0) 5878 (2591–9681)
Midlife hypertension 26.0 13.7 (4.0–24.4) 33,196 (9685–59,121)
Depression 13.3 8.0 (5.3–10.9) 19,296 (12,829–26,437)
Combined 57.0 (33.7–73.6) 138,020 (81,716–178,454)
Adjusted combined 48.4 (28.1–64.2) 117,294 (68,233–155,634)
  1. Dementia cases 2010 = 242,500 [33]
  2. CI confidence interval, PAR population attributable risk