Table 4.

Comparison of myocardial fibrosis markers between the groups after treatment.

	AF medication group (n = 50)	RFA group (n = 50)	t	P
PICP (µg/L)	192.43 ± 31.23	152.56 ± 29.92	6.519	<0.001
PIIINP (µg/L)	27.52 ± 8.23	19.24 ± 7.82	5.157	<0.001
MMP-9 (g/L)	1.63 ± 0.31	1.12 ± 0.24	9.199	<0.001

Values are mean ± standard deviation. AF, atrial fibrillation; RFA, radiofrequency ablation; PICP, carboxyterminal propeptide of type-I procollagen; PIIINP, procollagen type III N-terminal propeptide; MMP-9, matrix metallopeptidase-9.