Table 8 Descriptive statistic of the total study population (N = 3,337)

 Self-rated health

Good SRH

1,936

58.02

Poor SRH

1,401

41.98

 Gender

Female

1,694

50.76

Male

1,643

49.24

 Age group

18–29

394

11.81

30–39

615

18.43

40–49

870

26.07

50–59

649

19.45

60–69

477

14.29

70+

332

9.95

 Ethnicity

Other ethnic minorities

293

8.78

Han nationality

3,044

91.22

 Marital status

Divorced,separated,and widowed

354

10.61

Married

2,699

8.51

Single

284

80.88

 Residence

Rural

1,387

41.56

Urban

1,950

58.44

 Regions

West

878

26.31

East

1,169

35.03

Middle

878

26.31

Northeast

412

12.35

 Education degree

Primary or no education

1,237

37.07

Secondary education

1,630

48.85

College or higher

470

14.08

 Work status

Not working

1,136

34.04

Non-farm work

1,299

38.93

Farm work

902

27.03

 Household Income (RMB/dollars)

≤¥9999 (≤$1,510)

538

16.12

¥10000–49999($1,510–7,550)

2,026

60.71

¥50000–99999($7,550–15,099)

499

14.95

≥¥100000(≥$15,099)

274

8.21

 BMI

Normal weight

2,218

66.47

Underweight

348

10.43

Over weight

643

19.27

Obese

88

2.64

 Physical activity

Inactive

2,109

63.20

Active

1,228

36.80

 Smoking habit

No

2,295

68.77

Yes

1,042

31.23

 Life satisfaction

Happy life

2,514

75.34

Unhappy life

330

9.89

Average

643

19.27

 Depression

Severe

402

12.05

Mild

805

24.12

Few or no

2,130

63.83