Table 1 General characteristics of the respondents at baseline (2009)

Sex

<0.0001

 Male

5,390

43.6

44.5

74.36

75.10

15.46

 Female

6,960

56.4

55.5

70.16

70.98

16.54

Age

<0.0001

  ≤ 29

1,547

12.5

16.5

76.72

76.75

17.17

 30–39

2,423

19.6

21.9

74.85

74.92

15.53

 40–49

2,637

21.4

22.8

74.40

74.34

15.48

 50–59

2,183

17.7

17.4

72.48

72.86

15.30

 60–69

2,010

16.3

12.2

68.74

68.92

15.08

  ≥ 70

1,550

12.6

9.2

62.23

61.99

15.98

Residence

<0.0001

 Urban

5,611

45.4

47.6

72.83

73.58

16.05

 Rural

6,739

54.6

52.4

71.29

72.11

16.32

Marital status

<0.0001

 Married

8,975

72.7

70.3

72.26

72.84

15.63

 Widowed/divorced/unmarried

3,375

27.3

29.7

71.28

72.74

17.68

Employment status

<0.0001

 Employed

7,392

59.9

61.2

73.47

74.07

15.36

 Unemployed

4,958

40.2

38.8

69.79

70.82

17.23

Depressive symptoms

<0.0001

 Yes

1,330

10.77

10.6

61.77

62.99

18.84

 No

11,020

89.23

89.4

73.22

73.98

15.45

Alcohol consumption

<0.0001

 Never

2,551

20.7

19.1

68.52

69.58

16.94

 1 time per month

4,367

35.4

35.1

71.56

72.22

16.15

 2–3 times per week

1,837

14.9

15.8

74.40

75.12

16.06

  ≥ 4 times per week

3,595

29.1

30.1

73.75

74.34

15.44

Smoking status

<0.0001

 Never smoked

7,776

63.0

63.0

71.37

72.16

16.50

 Former smoker

1,838

14.9

13.8

72.84

73.85

15.47

 Current smoker

2,736

22.2

23.2

73.18

73.96

15.78

Exercise

<0.0001

 Never

6,946

56.2

55.3

70.08

71.08

16.84

 1–2 times per week

1,454

11.8

12.8

75.64

75.97

14.58

 3–4 times per week

1,438

11.6

12.0

74.45

74.92

15.29

 5–6 times per week

1,404

11.4

11.8

75.19

75.49

15.07

 Every day

1,108

9.0

8.2

71.89

72.61

15.30

Chronic disease

<.0001

 Yes

6,896

55.8

50.9

68.73

69.43

16.50

 No

5,454

44.2

49.1

76.11

76.31

14.96

Total

12,350

100.0

100.0

71.99

72.81

16.21