Table 1.
Characteristics of the study population
| Total | Men | Women | |
|---|---|---|---|
| No. of participants | 1432 | 532 | 900 |
| No. of case (%) | 469 (32.8) | 146 (27.4) | 323 (35.9) |
| TPO-Ab, (< 16) IU/mL | 9 [7, 13]*1 | 9 [7, 12]*1 | 9 [7, 13]*1 |
| Age, year | 60.9 ± 9.0 | 62.4 ± 8.7 | 59.9 ± 9.1 |
| TSH, (0.39–4.01) μIU/mL | 1.59 [1.11, 2.28]*1 | 1.53 [1.07, 2.16]*1 | 1.61 [1.13, 2.33]*1 |
| Free T3, (2.1–4.1) pg/mL | 3.2 ± 0.3 | 3.3 ± 0.3 | 3.1 ± 0.3 |
| Free T4, (1.0–1.7) ng/dL | 1.2 ± 0.2 | 1.3 ± 0.2 | 1.2 ± 0.1 |
| BMI, kg/m2 | 22.8 ± 3.4 | 23.6 ± 3.1 | 22.4 ± 3.5 |
| SBP, mmHg | 125 ± 17 | 129 ± 14 | 123 ± 18 |
| Anti-hypertensive medication, % | 30.9 | 38.7 | 26.3 |
| HbA1c, % | 5.6 ± 0.6 | 5.7 ± 0.7 | 5.6 ± 0.6 |
| TG, mg/dL | 105 ± 73 | 123 ± 91 | 95 ± 56 |
| HDLc, mg/dL | 61 ± 15 | 54 ± 14 | 64 ± 14 |
| Menopause, % | 50.3 | – | 80.0 |
TPO-Ab anti-thyroid peroxidase antibody, TSH thyroid-stimulating hormone, free T3 free triiodothyronine, free T4 free thyroxine, BMI body mass index, SBP systolic blood pressure, TG triglycerides, HDLc high-density lipoprotein cholesterol
No. of case is the number of participants with thyroid cyst. Values are mean ± standard deviation
*1Values are median [the first quartile, third quartile]. Normal range of measurements are ( )