Table 1. Baseline characteristics of the population.
Characteristic Subclinical hypothyroidism, n=18 Overt hypothyroidism, n=18 Healthy controls, n=18 P
Age, years, mean ± SD 37 ± 12.9 33.9 ± 12.1 36.8 ± 12.7 0.72
Gender, female, n (%) 14 (63.6%) 14 (63.6%) 15 (68.2%) 0.89
TSH, µIU/ml, median (range)
6.15 (4.6-34)
96.4 (10-140)
2.6 (0.9-3.9)
<0.001* ** ***
Free T4, ng/dl, median (range) 1.01 (0.78-1.53) 0.33 (0.09-0.5) 1.15 (0.89-1.40) <0.001*
Anti-TPO IU/ml, mean ± SD 284.27 ± 98.0 345.1 ± 45.3 135.5 ± 30.3 0.21
Fasting serum glucose, mg/dl, mean ± SD
94.0 ± 7.0
95.1 ± 6.1
87.2 ± 8.06
0.04** ***
BUN, mg/dl, mean ± SD 13.4 ± 3.2 12.0 ± 4.6 14.8 ± 8.4 0.38
Creatinine, mg/dl, mean ± SD 0.5 ± 0.1 0.6 ± 0.2 0.6 ± 0.1 0.41
Total cholesterol, mg/dl, mean ± SD 171 ± 31.2 204 ± 51.7 186.2 ± 24.3 0.04*
LDL, mg/dl, mean ± SD 96.7 ± 25.3 116.2 ± 40.3 107.8 ± 27.6 0.19
HDL, mg/dl, mean ± SD 47.2 ± 11.6 42.5 ± 10.5 53.5 ± 16.4 0.29
Triglycerides, mg/dl, mean ± SD 117.7 ± 42.7 140.4 ± 52.1 137.5 ± 52.2 0.34
BMI, kg/m2, mean ± SD 26.8 ± 4.7 29.2 ± 3.8 29.6 ± 3.6 0.50
Waist, cm, mean ± SD 83.1 ± 11.5 85.6 ± 10.1 88.1 ± 7.8 0.19
WHI, mean ± SD 0.78 ± 0.03 0.80 ± 0.06 0.83 ± 0.01 0.14
Systolic BP, mmHg, mean ± SD 120.7 ± 15.1 124.3 ± 13.3 115.2 ± 14.8 0.18
Diastolic BP, mmHg, mean ± SD 71.1 ± 9.3 74.1 ± 9.6 71.4 ± 8.8 0.60
Weekly dose of levothyroxine, mcg, median (range) 350.0 (250-700) 825 (600-1400) 0 <0.001*