Table 5 Logistic regression analyses regarding the association between the dependent variable dementia and the independent variables birth cohort, sex, education and stroke, and different interaction terms.

From: Decreasing prevalence of dementia in 85-year olds examined 22 years apart: the influence of education and stroke

Independent variables

Model 1

Model 2

Model 3

Model 4

OR (95%-CI)

OR (95%-CI)

OR (95%-CI)

OR (95%-CI)

Birth cohort

0.66 (0.50–0.86)

0.90 (0.66–1.22)

0.81 (0.59–1.11)

0.98 (0.68–1.41)

Male sex

 

0.81 (0.59–1.1)

0.79 (0.57–1.09)

0.80 (0.58–1.11)

More than basic education

 

0.70 (0.51–0.97)

0.69 (0.50–0.95)

0.70 (0.51–0.96)

Stroke

  

2.52 (1.82–3.49)

3.78 (2.28–6.29)

Stroke*birth cohort

   

0.50 (0.26–0.97)

  1. Dementia is dependent variable in all analyses.
  2. Interaction terms education*birth cohort (p = 0.63) and education*stroke (p = 0.97) were not significant and therefore removed from the models.
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