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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]