Efficacy and safety of ultrasound (US)-guided radiofrequency ablation of benign thyroid nodules

Egyptian Journal of Radiology and Nuclear Medicine

Table 5 The relation between the composition the thyroid nodule and the volume reduction ratio

		U/S picture			Test value	P-value	Sig.
		Solid	Complex	Cystic
		No. = 27	No. = 16	No. = 2
Volume reduction ratio after 1 month	Mean ± SD	59.50 ± 13.47	55.21 ± 17.26	70.30 ± 22.28	1.022^a	0.369	NS
Volume reduction ratio after 1 month	Range	30–96.23	29.52–89.33	54.55–86.06	1.022^a	0.369	NS
Volume reduction ratio after 3 months	Mean ± SD	70.39 ± 11.71	76.14 ± 9.32	90.30 ± 0.00	2.600^a	0.088	NS
Volume reduction ratio after 3 months	Range	40–87.33	60–94.14	90.3–90.3	2.600^a	0.088	NS
Volume reduction ratio after 6 months	Mean ± SD	81.02 ± 10.81	84.00 ± 14.82	92.42 ± 0.00	0.572^a	0.569	NS
Volume reduction ratio after 6 months	Range	57.45–92.13	36–98.28	92.42–92.42	0.572^a	0.569	NS

P value > 0.05, non-significant; P value < 0.05, significant; P value < 0.01, highly significant
^aOne-way ANOVA test