Table 1 Demographic characteristics and cardiovascular risk factors.

Age, years

83.6 ± 3.4

83.6 ± 3.3

83.5 ± 3.4

0.191

83.0 (81.0, 85.0)

83.0 (81.0, 85.0)

83.0 (81.0, 85.0)

Han Ethnicity n, (%)

1029(99.1)*

513(99.2)

516(99.0)

1.000

Current Smoker n, (%)

116(11.2)*

93(18.0)

23(4.4)

<0.001

Current Drinking n, (%)

87(8.4)*

78(15.1)

9(1.7)

<0.001

 Illiterate n, (%)

249(24.0)*

60(11.6)

189(36.3)

<0.001

 Primary School n, (%)

312(30.0)*

154(29.8)

158(30.3)

0.913

 Middle/High School n, (%)

336(32.4)*

210(40.6)

126(24.1)

<0.001

 College/University n, (%)

141(13.6)*

93(18.0)

48(9.3)

<0.001

 SBP mmHg

146.4 ± 20.6

145.0 ± 20.0

148.0 ± 21.0

0.038

 DBP mmHg

74.1 ± 11.9

75.0 ± 11.6

73.1 ± 12.1

0.006

 PP mmHg

72.5 ± 17.1

70.2 ± 16.8

75.2 ± 17.1

<0.001

 Heart rate, bpm

70.0 ± 9.0

68.4 ± 9.5

71.3 ± 8.3

0.003

 Height, cm

154.9 ± 10.1

161.9 ± 7.3

147.9 ± 7.2

<0.001

 Body weight, kg

55.7 ± 10.9

60.4 ± 10.0

50.9 ± 9.6

<0.001

 BMI, kg/m²

23.1 ± 3.7

23.0 ± 3.5

23.2 ± 4.0

0.484

 WC, cm

87.5 ± 10.6

87.7 ± 10.2

87.4 ± 10.9

0.684

 WHtR

0.57 ± 0.08

0.54 ± 0.07

0.59 ± 0.08

<0.001

 FG, mmol/L

5.53 ± 1.35

5.65 ± 1.45

5.40 ± 1.22

0.004

 TC, mmol/L

4.87 ± 0.99

4.67 ± 0.94

5.09 ± 1.00

<0.001

 TG, mmol/L

1.34 ± 0.57

1.30 ± 0.57

1.38 ± 0.56

0.005

 LDL–C, mmol/L

2.58 ± 0.74

2.49 ± 0.72

2.69 ± 0.75

<0.001

 HDL–C, mmol/L

1.60 ± 0.44

1.52 ± 0.41

1.69 ± 0.46

<0.001

 UA, μmol/L

350.1 ± 84.5

366.9 ± 81.9

331.2 ± 85.6

<0.001

 Creatinine, μmol/L

104.1 ± 32.4

111.3 ± 34.2

95.8 ± 28.0

<0.001

 e GFR, ml/(min · 1.73 m²)

58.7 ± 13.9

62.1 ± 14.0

56.6 ± 12.7

<0.001