Table 2.

The change in nodule volume in bipolar radiofrequency ablation (BRFA) group and control group

Nodule volume	Nodule volume (ml)		p-value
	BRFA group	Control group
Baseline	8.81 ± 8.66 (1.27–33.70)	6.90 ± 3.77 (1.10–14.62)	0.37
1 month	6.22 ± 6.20 (1.12–27.52)	6.86 ± 3.71 (1.10–14.79)	0.20
3 months	3.87 ± 3.98a (0.72–15.33)	7.17 ± 3.79b (1.16–15.00)	<0.001
6 months	1.59 ± 1.55c (0.25–7.43)	7.87 ± 3.95d (1.25–15.60)	<0.001

Mean volumes as mean ± standard deviation.

^ap <0.001, nodule volume at the 3-month follow-up was compared with baseline volume.

^bp <0.001, nodule volume at the 6-month follow-up was compared with baseline volume.

^cp <0.001, nodule volume at the 3-month follow-up was compared with baseline volume.

^dp <0.001, nodule volume at the 6-month follow-up was compared with baseline volume.