TABLE 3.

Risk factors for recurrence of atrial fibrillation (AF) by multivariate Cox regression analysis model.

Variable	Model 3		Model 4
	HR (95% CI)	P-value	HR (95% CI)	P-value
Hypertension	1.22 (0.82∼1.81)	0.336	1.29 (0.86∼1.92)	0.219
Duration of AF (≥3 years)	1.54 (1.08∼2.18)	0.017	1.48 (1.04∼2.11)	0.032
Persistent AF	1.56 (1.10∼2.20)	0.012	1.46 (1.03∼2.07)	0.035
LAD	1.06 (1.03∼1.09)	<0.001	1.06 (1.03∼1.09)	<0.001
CHA2DS2-VASc score	1.05 (0.95∼1.17)	0.357	1.06 (0.92∼1.22)	0.443
BMI	1.03 (0.97∼1.08)	0.368
Age			1.00 (0.98∼1.03)	0.976
FIB-4, continuous variable	1.24 (1.12∼1.38)	<0.001
NFS, continuous variable			1.28 (1.07∼1.52)	0.008

Model 3 included hypertension, duration of AF (≥3 years), persistent AF, LAD, CHA2DS2-VASc score, BMI, and FIB-4; Model 4 included hypertension, duration of AF (≥3 years), persistent AF, LAD, CHA2DS2-VASc score, age, and NFS. The variables in the liver fibrosis score formula were not enrolled in the multivariate Cox analysis model. AF, atrial fibrillation; LAD, left atrial diameter; BMI, body mass index; FIB-4, fibrosis-4; NFS, non-alcoholic fatty liver disease fibrosis score; HR, hazard ratio; CI, confidence interval.