Table 1 Sociodemographic characteristics and the establishment of health records (N = 115,730)

Gender

97.523

< 0.001

 Male

56,921 (49.2)

16,429 (28.9)

40,492 (71.1)

 Female

58,809 (50.8)

18,542 (31.5)

40,267 (68.5)

Age

18.004

< 0.001

 15–29

44,206 (38.2)

13,036 (29.5)

31,170 (70.5)

 30–44

71,524 (61.8)

21,935 (30.7)

49,589 (69.3)

Ethnicity

1.477

0.224

 Han

104,512 (90.3)

31,525 (30.2)

72,987 (69.8)

 Minority

11,218 (9.7)

3446 (30.7)

7772 (69.3)

Marital status

251.598

< 0.001

 Married

92,385 (79.8)

28,911 (31.3)

63,474 (68.7)

 Single

23,345 (20.2)

6060 (26.0)

17,285 (74.0)

Hukou status

60.538

< 0.001

 Rural

95,801 (82.8)

28,490 (29.7)

67,311 (70.3)

 Urban

19,929 (17.2)

6481 (32.5)

13,448 (67.5)

Education level

150.702

< 0.001

 Primary school or below

12,066 (10.4)

3265 (27.1)

8801 (72.9)

 Middle school

50,100 (43.3)

14,658 (29.3)

35,442 (70.7)

 High school

27,998 (24.2)

8782 (31.4)

19,216 (68.6)

 College degree or above

25,566 (22.1)

8266 (32.3)

17,300 (67.7)

Medical insurance

319.981

<0.001

 Insured

10,6078 (91.7)

32,827 (30.9)

73,251(69.1)

 Uninsured

9652 (8.3)

2144 (22.2)

7508 (77.8)

Average monthly household income

11.666

0.003

 ≤ 3000

14,325 (12.4)

4173 (29.1)

10,152 (70.9)

 3001–5000

34,054 (29.4)

10,452 (30.7)

23,602 (69.3)

 ≥ 5001

67,351 (58.2)

20,346 (30.2)

47,005 (69.8)