Table 1. Main characteristics of the study population and clinical data at baseline.

Parameter
N	48
Sex (males/females)	17/27
Age in years	56 ± 14 (24 – 80)
Thyroid nodule volume (mL)	23.5 ± 18.6 (3.4 – 89)
TSH (mIU/mL)	2.0 ± 0.9 (0.6 – 4.1)
FT3 (pg/mL)	2.6 ± 0.6 (1.2 – 3.7)
FT4 (pg/mL)	1.3 ± 0.2 (0.8 – 1.7)