Table 6.

Multivariate analysis of the occurrence of atrial fibrillation.

Variable	HR (95% CI)	P value
Age	1.032 (1.001–1.065)	0.043
Female gender	0.667 (0.359–1.240)	0.201
PAC counts	1.000 (1.000–1.000)	< 0.001
Hemodialysis	3.853 (1.130–13.139)	0.031
CAD	2.074 (1.015–4.241)	0.045
Chronic heart failure	0.710 (0.261–1.932)	0.502
History of AF	7.738 (4.202–14.250)	< 0.001
One or more risk of HRVa	2.396 (1.167–4.919)	0.017

PAC, premature atrial contraction; CAD, coronary artery disease; HRV, heart rate variability.

^aIndicates that at least one of the abnormal HRV parameters (HF, rMSSD, and pNN50) were present.