Table 1 Characteristics of the subjects

N

141,493

141,493

187,269

187,269

209,415

209,415

251,971

251,971

296,846

296,846

Male %

55

55

54

54

54

54

53

53

53

53

Mean age

42.5

42.5

44.4

44.4

43.4

43.4

46.9

46.9

48.8

48.8

Age group (%)

 0–1

2.1

2.1

1.9

1.9

1.7

1.7

1.5

1.5

1.0

1.0

 2–10

8.7

8.7

7.3

7.3

7.0

7.0

6.6

6.6

6.2

6.2

 11–20

9.0

9.0

9.3

9.3

9.3

9.3

8.4

8.4

7.3

7.3

 21–30

10.2

10.2

9.5

9.5

8.8

8.8

8.8

8.8

8.9

8.9

 31–40

13.4

13.4

12.1

12.1

11.3

11.3

10.3

10.3

9.6

9.6

 41–50

17.0

17.0

16.0

16.0

14.9

14.9

14.3

14.3

13.5

13.5

 51–60

15.5

15.5

16.6

16.6

18.6

18.6

18.9

18.9

18.3

18.3

 61–70

14.4

14.4

15.2

15.2

14.8

14.8

15.4

15.4

17.5

17.5

 71–80

8.1

8.1

9.9

9.9

10.8

10.8

12.2

12.2

12.9

12.9

  > 80

1.6

1.6

2.2

2.2

2.6

2.6

3.6

3.6

4.7

4.7

Income level (%)^*

 0^**

4.35

10.04

4.5

9.26

3.89

8.41

3.48

8.22

3.63

7.88

 1

8.67

7.27

6.86

6.75

7.23

7.44

7.31

7.62

7.41

7.7

 2

5.42

4.64

6.44

5.43

6.61

5.63

7.8

6.95

7.97

7.16

 3

6.21

5.17

7.01

5.98

7.43

6.48

6.05

5.3

5.99

5.31

 4

8.69

7.61

7.11

6.25

6.97

6.14

7.31

6.46

7.43

6.69

 5

8.2

7.36

8.33

7.33

8.28

7.47

8.16

7.21

7.98

7.22

 6

9.07

8.21

9.43

8.6

9.02

8.15

9.03

8.17

8.84

8.14

 7

9.85

8.95

10.43

9.69

10.18

9.45

10.24

9.61

10.08

9.41

 8

13.26

12.61

11.99

11.43

11.76

11.3

11.79

11.23

11.65

11.14

 9

12.87

13.13

13.56

13.61

13.66

13.52

13.61

13.51

13.67

13.53

 10

13.42

15

14.36

15.67

14.96

16

15.23

15.74

15.35

15.81

 Disabled (%)^*

5.7

20.1

7.1

24.1

7.1

24.1

6.9

23.8

7.1

23.5

 Chronic condition (N)^*

1.14

2.74

1.32

2.79

1.46

2.97

1.60

3.25

1.82

3.46