Table 1.

Characteristics of the study cohort by presence of atrial fibrillation (AF) Data are shown as mean (standard deviation) for continuous variables and percentages for categorical variables.

	No AF (n= 3921)	AF (n= 330)
Age, years	75.9 (5.3)	78.0 (5.4) ‡
Gender, % men	39.8	62.4†
Education, % primary	22.9	18.2
MMSE	27.1 (2.4)	26.6 (2.5)
Body mass index	27.0 (4.3)	27.1 (4.4)
Height, centimeters	166.8 (9.2)	170.9 (10.1) ‡
Ever smoker	56.7	63.9
Alcohol consumption, moderate/high	1.3	4.3†
Depressive symptoms	6.5	6.4
Hypertension	79.3	91.5‡
Myocardial infarction	13.6	23.9†
Heart failure	1.6	14.9‡
Diabetes mellitus	10.6	15.2*
Hypercholesterolemia	57.6	48.8
Warfarin use	1.9	46.4‡
Cerebral infarct on MRI	28.6	48.8‡

^*P < 0.05;

^†P < 0.01,

^‡P < 0.001 for age- and sex-adjusted comparison

MMSE = mini mental state examination

MRI = magnetic resonance imaging