Table 1 Baseline characteristics of the study population

Age (years)

53.8 ± 10.6

53.4 ± 10.6

57.5 ± 9.7

<0.001

Man (%)

5253 (46.3)

4731 (46.6)

522 (44.2)

0.12

Education

<0.001

Low

5760 (50.8)

4960 (48.8)

692 (58.5)

Middle

4539 (38.4)

4231 (41.6)

392 (33.2)

High

1046 (9.2)

972 (9.6)

98 (8.3)

Family income (dollar/year)

0.06

<5000

1607 (14.2)

1238 (12.2)

166 (14.0)

5000–20,000

6060 (53.4)

5547 (54.6)

646 (54.7)

>20,000

3678 (32.4)

3378 (33.2)

370 (31.3)

Smokers (%)

4007 (35.3)

3647 (35.9)

360 (30.5)

<0.001

Drinkers (%)

2565 (22.6)

2311 (22.7)

254 (21.5)

0.32

Han (%)

10,759 (94.8)

9640 (94.9)

1119 (94.7)

0.79

Others^a (%)

586 (5.2)

523 (5.1)

63 (5.3)

Anthropometric measures

Height (m)

1.61 ± 0.08

1.61 ± 0.08

1.60 ± 0.08

<0.001

BMI (kg/m²)

24.8 ± 3.7

24.6 ± 3.6

26.2 ± 3.7

<0.001

WC (cm)

82.4 ± 9.8

81.9 ± 9.7

87.1 ± 9.5

<0.001

ABSI (m^11/6 kg^−2/3)

0.0767 ± 0.0052

0.0765 ± 0.0052

0.0783 ± 0.0048

<0.001

BRI

3.70 ± 1.22

3.49 ± 1.11

3.87 ± 1.29

<0.001

WHtR

0.51 ± 0.06

0.51 ± 0.06

0.55 ± 0.06

<0.001

Measurement indicators

Uric acid (mg/dL)

291.9 ± 84.8

290.9 ± 84.0

300.1 ± 91.4

<0.001

SBP (mmHg)

141.7 ± 23.4

140.3 ± 23.0

153.2 ± 24.0

<0.001

DBP (mmHg)

82.0 ± 11.8

81.6 ± 11.6

85.5 ± 12.5

<0.001

LDL-c (mmol/L)

2.9 ± 0.8

2.9 ± 0.8

3.2 ± 0.9

<0.001

HDL-c (mmol/L)

1.4 ± 0.4

1.4 ± 0.4

1.3 ± 0.3

<0.001

TG (mmol/L)

1.6 ± 1.5

1.5 ± 1.3

2.5 ± 2.6

<0.001

TC (mmol/L)

5.2 ± 1.1

5.2 ± 1.1

5.6 ± 1.3

<0.001

FPG (mmol/L)

5.9 ± 1.6

5.5 ± 0.6

9.3 ± 3.2

<0.001