Table 4

Crude and adjusted dementia prevalence by ethnic identity, with prevalence ratios

'White'

N = 1677

'Mixed'

N = 394

'Black'

N = 261

Test for heterogeneity across

ethnic identity groups


Crude prevalence

Any dementia - crude prevalence (%)

190/1751

10.9%

(9.4-12.3%)

25/277

9.0%

(5.5-12.5%)

49/412

11.9%

(8.8-15.0%)

Crude prevalence ratio

1 (ref)

0.83 (0.55-1.25)

1.10 (0.82-1.47)

X2 = 1.0, 2 df p = 0.61

Standardized/adjusted for age, sex and education1

Any dementia - standardized prevalence (%)

11.1% (9.7-12.5%)

7.8% (5.0-10.6%)

11.8% (8.6-15.1%)

Adjusted prevalence ratio

1 (ref)

0.73 (0.50-1.06)

1.04 (0.79-1.38)

X2 = 2.5, 2 df p < 0.29

Standardized/adjusted for age, sex, education and APOE genotype1

Any dementia - standardized prevalence (%)

11.4% (10.0-12.8%)

8.3% (5.4-11.2%)

9.7% (7.3-12.1%)

Adjusted prevalence ratio

1 (ref)

0.74 (0.50-1.10)

0.92 (0.69-1.23)

X2 = 2.2, 2 df p = 0.32


1. X2 derived from likelihood ratio tests

Teruel et al. BMC Medical Genetics 2011 12:43   doi:10.1186/1471-2350-12-43

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