Duration (year)

Pooled age

Total

18 - 38

39/59

≥60

Slight

Pooled duration

[1] [3]

6

11

6

23

[4] [5]

4

1

1

2

[6] [7]

0

1

0

1

[8] [9]

1

2

1

4

Total

11

15

8

30

Moderate

pooled duration

[1] [3]

10

11

16

37

[4] [5]

2

4

7

9

[6] [7]

0

1

3

4

[8] [9]

1

1

2

4

[10] [11]

1

0

2

3

Total

14

19

30

57

Severe

pooled duration

[1] [3]

00

3

8

11

[4] [5]

00

1

4

3

Total

00

4

12

14

Total

25

38

50

113