Table 3.

The maximum diameter, volume, and VRR changes of thyroid nodules after MWA.

		Maximum diameter		Volume		VRR (%)
	n	Mean ± SD (cm)	p	Mean ± SD (ml)	p	Mean ± SD	p
Baseline	47	3.12 ± 0.86	—	7.47 ± 6.68	—	—	—
Immediately	47	3.28 ± 0.90	0.890	10.85 ± 10.18	0.060	—	–
1 month	46	2.80 ± 0.71	0.023*	5.82 ± 4.55	0.015*	37.90 ± 22.54	<0.001*
3 months	43	2.37 ± 0.62	<0.001*	3.73 ± 3.38	<0.001*	58.59 ± 20.34	<0.001*
6 months	43	2.01 ± 0.67	<0.001*	2.50 ± 2.63	<0.001*	73.84 ± 17.24	<0.001*
12 months	33	1.66 ± 0.61	<0.001*	1.42 ± 1.27	<0.001*	85.01 ± 10.86	<0.001*

MWA, microwave ablation; VRR, volume reduction rate.

*p < 0.05 vs. baseline.