Table I.
Characteristics of the SCH and EU participants and group differences.
| SCH (n=134) | EU (n=939) | p-value | |
|---|---|---|---|
| Age (years) | 51.10±12.01 | 48.41±11.61 | 0.0109 |
| Gender (M:F) | 45:89 | 528:411 | <0.0001 |
| Constitutions, n (%) | |||
| Taeeum-type individuals | 49 (36.30) | 278 (40.06) | 0.4133 |
| Soeum-type individuals | 32 (24.44) | 150 (21.61) | 0.4681 |
| Soyang-type individuals | 53 (39.26) | 262 (37.75) | 0.7413 |
| Taeyang-type individuals | 0 (0) | 4 (0.58) | 1.0000 |
| BMI (kg/m2) | 24.02±3.51 | 24.08±3.40 | 0.8563 |
| T3 (ng/dl) | 138.76±14.36 | 140.11±15.67 | 0.3806 |
| FT4 (ng/dl) | 1.17±0.22 | 1.22±0.23 | 0.0183 |
| TSH (μU/ml) | 6.30±3.03 | 2.29±0.89 | <0.0001 |
| AST (U/l) | 25.31±9.54 | 26.34±22.80 | 0.6872 |
| ALT (U/l) | 24.59±17.43 | 27.29±48.16 | 0.5201 |
| GGT (U/l) | 29.96±21.25 | 41.48±13.37 | 0.1421 |
| BUN (mg/dl) | 13.75±3.71 | 13.78±3.70 | 0.9231 |
| Creatinine (mg/dl) | 0.71±0.17 | 0.73±0.17 | 0.2658 |
| Ca (mg/dl) | 8.51±1.16 | 8.75±0.57 | 0.2364 |
| Phosphorus (mg/dl) | 3.64±0.73 | 3.51±1.87 | 0.4330 |
| Total cholesterol (mg/dl) | 188.57±42.65 | 193.08±37.98 | 0.2097 |
| Triglyceride (mg/dl) | 123.80±84.68 | 128.99±96.45 | 0.5564 |
| LDL-cholesterol (mg/dl) | 115.10±34.03 | 116.79±33.80 | 0.5909 |
| HDL-cholesterol (mg/dl) | 57.57±15.88 | 55.69±15.83 | 0.2004 |
| Glucose (mg/dl) | 86.09±23.16 | 93.11±21.90 | 0.0006 |
| RBC (106/μl) | 4.61±0.56 | 4.73±0.53 | 0.0162 |
| Hemoglobin (g/dl) | 15.10±11.44 | 14.36±2.49 | 0.0946 |
| Hematocrit (%) | 41.76±4.47 | 42.72±4.50 | 0.0224 |
| MCV (fL) | 90.14±5.02 | 90.53±5.82 | 0.4609 |
| MCH (pg) | 30.56±5.50 | 30.34±2.64 | 0.4537 |
| MCHC (%) | 33.37±1.54 | 33.39±1.46 | 0.8759 |
| Platelet (103/μl) | 256.58±60.66 | 255.75±64.29 | 0.8885 |
| Total RS | 41.44±21.98 | 41.83±35.62 | 0.8628 |
SCH, subclinical hypothyroidism group; EU, euthyroidism group; BMI, body mass index; T3, triiodothyronine; FT4, free thyroxine; TSH, thyroid-stimulating hormone; AST, aspartate transaminase; ALT, alanine transaminase; GGT, γ-glutamyl transaminase; BUN, blood urea nitrogen; LDL, low-density lipoprotein; HDL, high-density lipoprotein; RBC, red blood cells; MCV, mean corpuscular volume; MCH, mean corpuscular hemoglobin; MCHC, mean corpuscular hemoglobin concentration; RS, ryodoraku score.