Table 1 Characteristics of the study population

Number (Male/female)

737 (168/569)

8671 (3636/5035)

5943 (4404/1539)

1624 (1315/309)

Age, years

34 ± 11**

41 ± 11

44 ± 10**

43 ± 10**

Height, cm

163.3 ± 7.1**

164.7 ± 7.8

167.7 ± 7.9**

168.5 ± 7.6**

Weight, kg

47.0 ± 4.6**

58.7 ± 7.3

72.2 ± 7.6**

85.4 ± 9.9**

BMI, kg/m²

17.6 ± 0.7**

21.6 ± 1.4

25.6 ± 1.1**

30.0 ± 2.1**

SBP, mmHg

110 ± 12**

116 ± 15

125 ± 16**

134 ± 17**

DBP, mmHg

68 ± 9**

71 ± 11

78 ± 11**

84 ± 12**

TSH, uIU/ml

1.89 ± 0.87

1.88 ± 0.89

1.84 ± 0.86*

1.90 ± 0.90

fT3, pg/ml

2.80 ± 0.28*

2.83 ± 0.29

2.91 ± 0.29**

2.97 ± 0.29**

fT4, ng/dl

1.05 ± 0.10**

1.03 ± 0.11

1.01 ± 0.11**

1.01 ± 0.11**

fT3/ fT4

2.68 ± 0.32**

2.78 ± 0.37

2.91 ± 0.39**

2.96 ± 0.40**

FBG, mmol/l

4.92 ± 0.59**

5.08 ± 0.68

5.32 ± 0.95**

5.63 ± 1.28**

HbA1c, %

5.31 ± 0.25**

5.44 ± 0.47

5.58 ± 0.55**

5.77 ± 0.78**

TG, mmol/l

0.80 ± 0.30**

1.15 ± 0.83

1.81 ± 1.48**

2.32 ± 2.32**

TC, mmol/l

4.19 ± 0.76**

4.46 ± 0.83

4.69 ± 0.87**

4.81 ± 0.90**

LDL-C, mmol/l

2.31 ± 0.62**

2.65 ± 0.70

2.87 ± 0.74**

2.95 ± 0.79**

HDL-C, mmol/l

1.58 ± 0.30**

1.37 ± 0.30

1.16 ± 0.25**

1.07 ± 0.21**

Homocysteine, umol/l

11.71 ± 5.79

11.91 ± 6.65

12.76 ± 6.36**

13.66 ± 7.74**