Table 2 Characteristics of included patients

Patients

Age

42.94 ± 14.23

43.21 ± 14.10

42.19 ± 14.61

0.839

0.573

Gender

 Male

38.59%

39.41%

36.36%

0.536

0.464

 Female

61.41%

60.59%

63.64%

Marital state

2.373

0.126

 Single

27.26%

25.69%

31.56%

 Married

72.74%

74.31%

68.44%

Ethnicity

0.911

0.340

 Han

92.97%

93.53%

91.44%

 Others

7.03%

6.47%

8.56%

Living site

1.327

0.249

 City

82.21%

83.33%

79.57%

 Country

17.79%

16.67%

20.43%

Life status

1.285

0.257

 Living alone

9.18%

8.43%

11.23%

 Living with others

90.82%

91.57%

88.77%

Education

4.439

0.218

 Primary school

6.45%

5.29%

9.63%

 Middle school

19.66%

19.61%

19.79%

 High school

25.97%

26.67%

24.06%

 University and above

47.91%

48.43%

46.52%

Household income (RMB)

4.680

0.096

 < 4000

33.82%

31.49%

40.11%

 4000–8000

34.97%

35.84%

32.62%

 ≥8000

31.21%

32.67%

27.27%

Employment status

3.860

0.049

 Employed

48.92%

51.17%

42.78%

 Unemployed

51.08%

48.82%

57.21%

Insurance

2.034

0.154

 Yes

86.94%

88.07%

83.96%

 No

13.06%

11.93%

16.04%

Alcohol

0.233

0.972

 Never

49.71%

49.31%

50.80%

 Social drinking

42.10%

42.63%

40.64%

 Drink in the past, but quit now

5.60%

5.50%

5.88%

 Almost drink everyday

2.59%

2.56%

2.68%

Smoking

0.271

0.873

 Never

72.56%

72.89%

71.66%

 In the past

13.07%

13.16%

12.83%

 Currently

14.37%

13.95%

15.51%

Department

15.126

0.001

 TCM

33.14%

37.06%

22.46%

 Biomedicine

32.14%

31.57%

33.69%

 PSY

34.72%

31.37%

43.85%