Table 1.

Sample characteristics with demographic data, cerebrovascular risk factors, and MRI measures.

Demographic characteristics
Female sex, n (%)	412 (45.8%)
Age [years], median (IQR)	64 (14)
Cerebrovascular risk factors
Active smoker, n (%)	141 (15.7%)
Diabetes mellitus,a n (%)	73 (8.1%)
Hypertension,b n (%)	618 (68.7%)
Conventional MRI measures
Total brain volume [ml], median (IQR)	1,483 (203)
WMH volume [ml], median (IQR)	0.66 (1.4)
WMH load [%], median (IQR)	0.04 (0.1)

IQR: interquartile range; ml: millilitre; n: number of participants; WMH: white matter hyperintensities.

^aPrevalence of diabetes mellitus was defined as blood glucose level >126 mg/dl or self-report.

^bPrevalence of hypertension was defined as blood pressure >= 140/90 mm/Hg, intake of antihypertensive medication or self-report.