Table 3. Multivariate analysis of risk factors for incident AF.

Variables	HR(95% CI)	p*
Age (years)
30-39 vs. ≥80	0.090 (0.072-0.112)	<0.001
40-49 vs. ≥80	0.183 (0.150-0.223)	<0.001
50-59 vs. ≥80	0.310 (0.256-0.375)	<0.001
60-69 vs. ≥80	0.520 (0.432-0.626)	<0.001
70-79 vs. ≥80	0.755 (0.624-0.914)	0.004
Sex
Male vs. female	1.302 (1.195-1.418)	<0.001
BMI	1.024 (1.015-1.034)	<0.001
SBP	1.001 (0.998-1.003)	0.682
DBP	1.001 (0.996-1.005)	0.812
Glucose	1.000 (0.999-1.001)	0.572
Total-cholesterol	0.999 (0.998-1.000)	0.044
Hemoglobin	1.013 (0.984-1.042)	0.390
Co-morbidity
Hypertension	1.651 (1.517-1.796)	<0.001
Ischemic heart disease	1.638 (1.497-1.792)	<0.001
Heart failure	1.521 (1.371-1.687)	<0.001
Diabetes mellitus	1.059 (0.973-1.153)	0.183

^*by Cox proportional hazard regression analysis. AF: atrial fibrillation, HR: hazard ratio, CI: confidence interval, BMI: body mass index, SBP: systolic blood pressure, DBP: diastolic blood pressure