Table 1 Descriptive characteristics stratified by gender among the 7560 respondents (%)

Poor SRH

29.2419

0.000***

 No

75.50

37.13

38.37

 Yes

24.50

10.25

14.25

Age group (years)

0.1656

0.684

 60–69

52.49

25.01

27.47

  ≥ 70

47.51

22.42

25.09

Marital status

440.5079

0.000***

 Never married

0.90

0.53

0.37

 Currently married

75.48

40.68

34.80

 Cohabited

0.17

0.08

0.09

 Separated/Divorced

1.38

0.68

0.70

 Widowed

22.07

5.48

16.59

Ever schooled

537.4515

0.000***

 Yes

65.77

37.51

28.25

 No

34.23

9.92

24.31

Ethnicity

1.2821

0.258

 Han majority

98.66

46.68

51.98

 Ethnic minority

1.34

0.71

0.63

Always lived in this village/town/city

292.5727

0.000***

 Yes

49.38

28.45

20.93

 No

50.62

19.02

31.59

Fruit intake

17.7284

0.001***

 0

23.41

12.17

11.24

 1

13.21

6.14

7.06

 2

26.44

12.42

14.02

 3

14.02

6.23

7.79

  ≥ 4

22.92

10.66

12.26

Vegetable intake

44.4884

0.000***

 0–4

27.93

11.86

16.07

 5

24.64

11.47

13.17

 6–9

19.41

9.49

9.92

 10

19.61

9.92

9.68

  ≥ 11

8.41

4.71

3.70

Vigorous level of physical activity

129.0088

0.000***

 Yes

11.71

7.68

4.03

 No

88.29

39.66

48.63

Moderate level of physical activity

3.3725

0.066*

 Yes

45.17

20.87

24.30

 No

54.83

26.51

28.31

Walk/bike activity

15.4592

0.000***

 Yes

66.50

32.56

33.94

 No

33.50

14.77

18.73

Vigorous fitness/leisure

19.5856

0.000***

 Yes

4.08

2.45

1.64

 No

95.92

44.93

50.99

Moderate fitness/leisure

8.7883

0.003***

 Yes

15.77

8.10

7.67

 No

84.23

39.24

44.99