Table 1.

Baseline characteristics of patients with Bethesda category IV thyroid nodules (n = 132).

	MWA group	Surgery group
Thyroid nodules (n, %)	47 (35.60)	85 (64.08)
Case number (n, %)	46 (35.38)	84 (65.94)
Age (years)	46.30 ± 11.54	46.10 ± 12.11
Sex
Male (%)	11 (23.91%)	13 (15.48%)
Female (%)	35 (74.47%)	71 (84.52%)
The volume of thyroid nodule (ml)	7.47 ± 6.68*	5.44 ± 8.41
The maximum diameter of thyroid nodule (cm)	3.12 ± 0.86*	2.32 ± 1.54

MWA, microwave ablation.

*p < 0.05 vs. surgery group.