Table 1 Demographic characteristics of 5,792 subjects

Gender

< 0.001

 Male

2,418

48.87

272

32.23

 Female

2,530

51.13

572

67.77

Age (year)

 Mean (SD)

61.99

9.64

64.06

10.15

< 0.001

 < 65

3,180

64.27

459

54.38

< 0.001

 65≤

1,768

35.73

385

45.62

Marital status

< 0.001

 Spouseless^a

696

14.07

197

23.34

 Married

4,252

85.93

647

76.66

Education level

< 0.001

 Elementary school (≤6 years)

1,649

33.33

380

45.02

 Middle school (6-9 years)

990

20.01

178

21.09

 High school or above (≥9 years)

2,309

46.67

286

33.89

Tobacco

< 0.001

 No

4,274

86.38

767

90.88

 Yes

647

13.62

77

9.12

Alcohol

0.001

 No

2,842

57.44

537

63.6

 Yes

2,106

42.56

307

36.37

Physical activity

0.005

 No

1,749

35.10

341

40.40

 Yes

3,199

64.65

503

59.60

Obesity^b

0.468

 No

2,883

58.27

503

59.60

 Yes

2,065

41.73

341

40.40