Table 1 Basic Characteristics of 326,951 Participants by Sex

Age, years (%)

 30-39

16.83

20.15

 40-49

31.38

35.35

 50-59

29.87

28.80

 60-69

16.20

12.04

 ≥70

5.72

3.66

Education (%)

 Illiterate

8.65

23.37

 Elementary

32.96

31.35

 Middle school

33.73

27.09

 High school

17.67

13.85

 College and University

7.00

4.33

Household Income (%)

 <4,999 yuan

9.29

9.70

 5,000-9,999 yuan

17.88

20.53

 10,000-19,999 yuan

28.83

30.20

 20,000-34,999 yuan

25.06

24.03

 ≥35,000 yuan

18.93

15.54

Marital Status (%)

 Married

93.16

90.86

 Divorced, widowed, separated or never married

6.84

9.14

Tobacco use (%)

 Nonsmoker

14.01

95.68

 Occasional smoker

11.47

1.69

 Former smoker

10.35

0.58

 Regular smoke

64.17

2.05

Alcohol use (%)

 Never regular drinker

19.00

61.78

 Ex regular drinker

2.19

0.27

 Occasional or seasonal drinker

33.47

33.99

 Monthly drinker

6.91

1.50

 Reduced intake

3.69

0.37

 Weekly

34.74

2.10

Physical activity, MET-hours/day (mean ± SD)

23.53 (15.29)

21.66 (12.92)

Province (%)

 Qingdao (Urban)

8.35

6.64

 Harbin (Urban)

9.03

9.54

 Haikou (Urban)

5.31

6.89

 Suzhou (Urban)

9.34

8.86

 Liuzhou (Urban)

7.60

9.07

 Sichuan (Rural)

10.74

11.54

 Gansu (Rural)

10.94

11.49

 Henan (Rural)

14.31

13.27

 Zhejiang (Rural)

11.05

10.76

 Hunan (Rural)

13.32

11.93

 Height (cm)

165.27 (6.23)

154.33 (5.71)

 Weight (kg)

63.59 (9.77)

56.12 (8.59)

 BMI (kg/m²)

23.22 (2.97)

23.52 (3.12)

 Waist Circumference (cm)

81.13 (8.90)

78.02 (8.58)

 Hip Circumference (cm)

90.27 (6.26)

90.70 (6.18)

 Body Fat (%)

21.72 (5.80)

31.56 (6.51)

 Waist to Hip Ratio

0.90 (0.05)

0.86 (0.07)

 Waist to Height Rario

0.49 (0.06)

0.51 (0.06)