| Epidemiological characteristics of subjects (n = 150) | |
| Women | 112 (74.6%) |
| Age < 30 years | 33 (22%) |
| Age [30 to 59 years] | 94 (62.6%) |
| Age > 60 years | 23 (15.3%) |
| High blood pressure | 47 (31.3%) |
| Obesity and overweight | 36 (24%) |
| Diabetes mellitus | 10 (6.6%) |
| Active smoking | 5 (3.3%) |
| Underlying heart disease | 15 (10%) |
| Anemia | 36 (24%) |
| Graves’ disease | 123 (82%) |
| Toxic nodular goiter | 27 (18%) |
| Mean body mass index | 22.3 ± 5 kg/m2 |
| Mean free T4 | 77.2 ± 50 pmol/l |