Table 1 Characteristics of the study subjects
Characteristic | SAFHS (n = 919) | NHANES 2007–10 (n = 1636) | ||
|---|---|---|---|---|
Value | N | Value | N | |
Demographics | Â | Â | Â | Â |
  Age [mean (SE)] y | 38.92 (0.54) | 907 | 35.42 (0.81†) | 1636 |
  Females [n (%)] | 555 (61.19) | 907 | 842 (47.98††) | 1636 |
  Diabetes at enrolment [n (%)] | 126 (13.91) | 906 | 170 (7.35) | 1635 |
Anthropometric indexes [mean (SE)] | Â | Â | Â | Â |
  Waist cm | 94.71 (0.58) | 898 | 95.65 (0.68) | 1589 |
  BMI Kg/m2 | 29.50 (0.23) | 900 | 28.49 (0.27) | 1618 |
  WHR | 0.89 (0.003) | 897 | - | - |
Blood pressure [mean (SE)] | Â | Â | Â | Â |
  Systolic mmHg | 119.96 (0.61) | 899 | 116.98 (0.75) | 1504 |
  Diastolic mmHg | 70.56 (0.34) | 899 | 66.84 (0.56) | 1504 |
Biochemical indexes [mean (SE)] | Â | Â | Â | Â |
  Fasting glucose mmol/L | 5.59 (0.07) | 907 | 6.00 (0.11) | 805 |
  Fasting insulin μU/mL | 16.72 (0.65) | 894 | 15.64 (0.63) | 803 |
  Total serum cholesterol mg/dl | 189.06 (1.32) | 906 | 190.35 (1.54) | 1636 |
  Serum triglycerides mg/dl | 151.56 (4.40) | 906 | 141.15 (3.31) | 805 |
  HDL cholesterol mg/dl | 50.54 (0.43) | 905 | 48.90 (0.31) | 1636 |
  LDL cholesterol mg/dl | 109.92 (1.10) | 906 | 112.42 (1.52) | 785 |
Thyroid related traits [mean (SE)] | Â | Â | Â | Â |
  Total thyroxine μg/dl | 7.63 (0.07) | 839 | 8.19 (0.08) | 1628 |
  Free thyroxine ng/dl | 1.38 (0.01) | 907 | 0.80 (0.01) | 1636 |
  Total triiodothyronine ng/dl | 122.15 (0.92) | 845 | 122.89 (1.03) | 1635 |
  Free triiodothyronine pg/ml | 3.62 (0.04) | 907 | 3.42 (0.03) | 1634 |
  Reverse triiodothyronine ng/dl | 23.00 (0.30) | 451 | - | - |
  Thyroxine binding globulin μg/ml | 19.84 (0.19) | 856 | - | - |
  Thyroglobulin ng/ml | 11.56 (1.11) | 879 | 11.27 (1.15) | 1635 |
  Thyroid stimulating hormone μU/ml | 2.96 (0.14) | 907 | 2.00 (0.14) | 1635 |