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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
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Alzheimer's Research & Therapy

ISSN: 1758-9193