Table 1.

Baseline characteristics

	STA group (n = 36)	TMG group (n = 12)	p value
Age (years)	55 (27–74)	57 (34–80)	0.694
Gender (female)	30 (83%)	11 (92%)	0.662
TSH (mU/L)	0.01 (< 0.005–0.290)	0.02 (< 0.005–0.450)	0.598
Overt vs. subclinical hyperthyroidism	17:19	5:7	0.738
Anti-thyroid drug use	1 (2.8%)	2 (16.7%)	0.085
Number of autonomous nodules treated	1	1 (1–3)
Baseline volume (mL)	14.4 (1.3–59.4)	8.7 (1.0–26.7)	0.063
Vascular intensity			0.097
0   1   2   3	0 2 (5.9%) 7 (20.6%) 25 (73.5%)	1 (10%) 0 0 9 (90%)
Vascular pattern			0.129
0   1   2   3	0 6 (17.6%) 11 (32.4%) 7 (50.0%)	1 (10%) 1 (10%) 1 (10%) 7 (70%)

Results are presented as medians and ranges in brackets or number and percentage in brackets.