Table 1 Baseline characteristics of study subjects and gender subgroups

Age,years

20.91 ± 2.55

20.81 ± 0.70

20.97 ± 2.44

P < 0.001

BMI,kg/m ²

 mean ± SD

21.81 ± 3.59

23.12 ± 3.96

21.02 ± 3.09

P < 0.001

 Thin

3331(14.9%)

759(9.0%)

2572(18.4%)

P < 0.001

 Normal weight

14,137(63.2%)

4724(56.0%)

9413(67.5%)

 Overweight

3480(15.6%)

1992(23.6%)

1488(10.7%)

 Obesity

1431(6.4%)

963(11.4%)

468(3.4%)

SBP,mmHg

 mean ± SD

113 ± 13

120 ± 12

110 ± 11

P < 0.001

 < 140

22,047(98.5%)

8161(96.7%)

13,886(99.6%)

P < 0.001

 ≥ 140

332(1.5%)

277(3.3%)

55(0.4%)

DBP,mmHg

 mean ± SD

71 ± 9

74 ± 9

70 ± 8

P < 0.001

 < 90

21,682(96.9%)

7923(93.9%)

13,759(98.7%)

P < 0.001

 ≥ 90

697(3.1%)

515(6.1%)

182(1.3%)

FBG,mmol/L

 mean ± SD

4.52 ± 0.54

4.53 ± 0.60

4.52 ± 0.49

P < 0.001

 < 5.60

21,959(98.1%)

8221(97.4%)

13,738(98.5%)

P < 0.001

 5.6–6.99

384(1.7%)

198(2.3%)

186(1.3%)

 ≥ 7.00

36(0.2%)

19(0.2%)

17(0.1%)

TC,mmol/L

 mean ± SD

3.95 ± 0.96

3.95 ± 0.81

3.96 ± 0.73

P < 0.001

 < 6.22

22,191(99.2%)

8352(99.0%)

13,839(99.3%)

P = 0.023

 ≥ 6.22

188(0.8%)

86(1.0%)

102(0.7%)

TG,mmol/L

 mean ± SD

0.92 ± 0.53

1.08 ± 0.66

0.83 ± 0.40

P < 0.001

 < 2.26

21,888(97.8%)

8067(95.6%)

13,821(99.1%)

P < 0.001

 ≥ 2.26

491(2.2%)

371(4.4%)

120(0.9%)

LDL-C,mmol/L

 mean ± SD

2.38 ± 0.63

2.49 ± 0.68

2.32 ± 0.59

P < 0.001

 < 4.14

22,179(99.1%)

8313(98.5%)

13,866(99.5%)

P < 0.001

 ≥ 4.14

200(0.9%)

125(1.5%)

75(0.5%)

HDL-C,mmol/L

 mean ± SD

1.39 ± 0.30

1.27 ± 0.27

1.47 ± 0.30

P < 0.001

 > 1.04

19,882(88.8%)

6735(79.8%)

13,147(94.3%)

P < 0.001

 ≤ 1.04

2497(11.2%)

1703(20.2%)

794(5.7%)

Dyslipidemia

2947(13.17%)

1944(23.0%)

1003(7.2%)

P < 0.001

ALT,U/L

17.12 ± 15.65

22.69 ± 20.05

13.74 ± 10.93

P < 0.001

AST,U/L

18.95 ± 7.55

20.86 ± 9.33

17.79 ± 5.94

P < 0.001

TBIL,umol/L

13.35 ± 7.05

15.82 ± 7.94

11.85 ± 5.98

P < 0.001

CR,mmol/L

69.39 ± 13.94

81.51 ± 11.49

62.05 ± 9.45

P < 0.001

BUN,mmol/L

4.25 ± 1.16

4.68 ± 0.60

3.99 ± 1.07

P < 0.001

HB,g/L

142 ± 18

159 ± 10

132 ± 13

P < 0.001

WBC,×10 ⁹ /L

6.70 ± 1.58

6.79 ± 1.56

6.65 ± 1.60

P = 0.010

PLT,×10 ⁹ /L

274 ± 62

259 ± 55

284 ± 65

P < 0.001