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Table 2 Prevalence and relative risk data sources

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

Risk factor

Prevalence

Relative risk

Communality (%)a

Midlife obesity

32.0b

1.64 (1.34–2.00)d

28.9

Physical inactivity

56.0b

1.39 (1.16–1.67)e

16.9

Smoking

16.1b

1.28 (0.99–1.60)d

11.3

Low educational attainment

24.0b

1.72 (1.52–1.96)d

12.9

Diabetes mellitus

5.4b

1.46 (1.20–1.77)d

30.6

Midlife hypertension

26.0b

1.61 (1.16–2.24)f

31.5

Depression

13.3c

1.65 (1.42–1.92)d

4.2

  1. a Estimated using the Australia Diabetes, Obesity and Lifestyle Study 2012 [32]
  2. b Obtained from ABS Health Survey 2012–2013 [29]
  3. c Obtained from AIHW, 2007 [30]
  4. d World Alzheimer Report, 2014 [21]
  5. e Obtained from Hamer et al., 2009 [31]
  6. f Obtained from Norton et al., 2014 [14]