Table 3.

Nodule characteristics and the effects of MWA at different sizes.

	Nodule Volume
	≤ 10 cm3	10–30 cm3	≥ 30 cm3
No. of nodules	46	95	7
Nodule volume (cm3)
Baseline	3.5±2.5	19.2±5.3	37.3±5.6
1 month	3.9±2.2*	15.4±4.5*	29.9±2.8*
12 months	1.4±1.4*	7.5±2.6*	15.8±2.1*
24 months	0.6±0.8*	4.7±1.8*	9.5±1.9*
36 months	0.2±0.5*	2.4±1.1*	5.7±1.6*
48 months	0.1±0.1*	0.8±0.4*	2.2±0.7*
VRR (%)
1 month	21.7±9.1	20.2±6.2	19.1±6.6
12 months	75.4±16.9#	61.0±6.9#♦	57.4±4.6#♦
24 months	91.2±10.2#	75.4±7.1#♦	74.6±3.6#♦
36 months	97.5±5.4#	87.6±4.8#♦	84.8±2.7#♦
48 months	99.1±2.0#	95.9±1.9#♦	94.2±1.6#♦

Data are means ± standard deviation.

Abbreviation: VRR, volume reduction rate.

^*P < 0.05 versus baseline values respectively, ^#P < 0.05 versus VRR (%) at 1-month follow-up after ablation, respectively, ^♦P < 0.05 versus VRR (%) at ≤ 10 cm³ group respectively.