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Table 1 Sociodemographic and clinical characteristics of ALFA participants

From: Spatial patterns of white matter hyperintensities associated with Alzheimer’s disease risk factors in a cognitively healthy middle-aged cohort

Sociodemographic and clinical variables (n = 561)

Mean / n 

Interquartile range / % 

CAIDE-I risk (%)

1.47

0.67–3.22

CAIDE-I score (0–15)

6

4–8

Age (years)

58

51–64

Hypertension, n (%)

147

26.2

Hypercholesterolemia, n (%)

171

30.5

BMI (kg/m2)

26.4

24.0–29.4

Sex (male), n (%)

219

38.9

Education (years)

14

11–17

Physical exercise, n (%)

 Active

368

65.6

 Not active

148

26.4

 Not available

45

8.0

APOE genotype, n (%)

ε4/ε4

71

12.7

ε4/ε3

170

30.3

ε3/ε3

159

28.3

ε2/ε4

45

8.0

ε2/ε3

109

19.4

ε2/ε2

7

1.2

Family history of AD, n (%)

 Maternal

190

33.9

 Paternal

91

16.2

 From both

16

2.9

 None

245

43.7

 Not available

19

3.4

Fazekas Scale, n (%)

 Score 0

269

48.0

 Score 1

247

44.0

 Score 2

43

7.7

 Score 3

2

0.4

Total WMH load (cm3)

1.94

1.13–3.69

Total WMH load/TIV (%)

0.14

0.08–0.26

MMSE

29

28–30

Time difference between visit and MRI (days)

307

251–366

  1. Values are expressed as median (interquartile range) unless otherwise indicated
  2. AD Alzheimer’s disease, APOE apolipoprotein E, BMI body mass index, CAIDE Cardiovascular Risk Factors, Aging, and Incidence of Dementia, MMSE Mini-Mental State Examination, MRI magnetic resonance imaging, TIV total intracranial volume, WMH white matter hyperintensities