Table 1 Self-reported personal factors and exposures

Personal and lifestyle factors

  Age, years; mean (SD)

1591

47 (11)

47 (11)

47 (10)

47 (10)

50 (9)

44 (13)

  BMI, points; mean (SD)

1555

24 (3.8)

24 (3.8)

24 (3.3)

24 (4.0)

25 (4.1)

24 (3.5)

  Number of children at home; mean (SD)

1575

1.0 (1.1)

1.1 (1.1)

1.1 (1.1)

1.0 (1.0)

1.0 (1.1)

0.8 (1.0)

 Personal recovery time (%)

1555

   ≥ 3 h/day

25

24

18

26

28

31

  1–2 h /day

53

53

59

51

52

48

   < 1 h/day

22

23

23

23

20

21

 Domestic work (%)

1564

  0–10 h/week

36

32

32

35

38

43

  11–20 h/week

41

48

36

38

45

36

  ≥ 21 h/week

23

20

33

27

17

21

 Physical exercise (%)

1570

  Twice a week or more

73

70

81

71

71

72

  Once a week

14

14

13

14

12

17

  Occasionally or never

13

15

6

15

17

11

 Smoking habits (%)

1520

  Have never smoked

62

67

65

57

46

76

  Former smoker

29

23

29

34

39

20

  Smoking, but not daily

4

5

4

3

5

2

  Daily smoker

5

4

2

6

10

2

Working hours/week (%)

1581

  Part-time <30 h/week

9

10

11

9

8

6

  Fulltime ≥ 30 h/week

91

90

89

91

92

94

Physical workload

  MEI; mean (SD)

11–33

1484

19 (3.9)

16 (3.4)

19 (3.5)

21 (3.4)

20 (3.7)

18 (3.1)

  PHYI; mean (SD)

7–21

1491

12 (3.2)

10 (1.7)

13 (3.0)

13 (2.7)

15 (2.9)

10 (2.1)

 Satisfied with computer

 workstation arrangements (%)

1499

  Satisfied

42

28

36

39

47

64

  Neutral

32

34

30

42

32

24

  Dissatisfied

26

38

34

20

21

12

Psychosocial factors; mean (SD)

  Job demands

1–4

1548

2.8 (0.4)

2.9 (0.4)

2.9 (0.4)

2.8 (0.4)

2.8 (0.4)

2.5 (0.4)

  Job control

1–4

1549

2.9 (0.4)

3.2 (0.3)

3.0 (0.3)

2.9 (0.4)

2.7 (0.3)

2.8 (0.3)

  Job support

1–4

1552

2.9 (0.4)

2.8 (0.4)

2.8 (0.4)

2.9 (0.4)

2.9 (0.4)

2.9 (0.4)

 Emotional demands

0–4

1530

2.2 (0.8)

2.9 (0.7)

2.2 (0.6)

2.0 (0.6)

1.9 (0.8)

1.8 (0.6)

 Demands of hiding emotions

0–4

1528

1.6 (0.8)

1.7 (0.8)

1.6 (0.7)

1.6 (0.7)

1.4 (0.9)

1.7 (0.7)

 Sensory demands

0–4

1530

2.9 (0.7)

2.4 (0.6)

3.1 (0.5)

3.3 (0.5)

2.8 (0.6)

3.2 (0.5)

 Leadership

0–4

1528

2.0 (0.7)

2.0 (0.8)

1.9 (0.7)

2.0 (0.7)

2.1 (0.7)

2.2 (0.7)

 Self-efficacy

1–5

1522

1.9 (0.5)

1.9 (0.5)

1.8 (0.4)

1.9 (0.5)

1.9 (0.5)

1.9 (0.4)