Table 2 Cox proportional hazard ratios (HR) with 95% confidence intervals (CI) of background factors, occupational groups, psychosocial working conditions and job strain for being granted DP due to MSD during the follow-up

Sex (being a woman)

1.73

1.57, 1.91

-

-

-

-

Marital status (unmarried)

1.15

1.05, 1.27

1.01

0.83, 1.24

1.07

0.91, 1.25

Children living at home (no)

1.32

1.19, 1.45

0.97

0.79, 1.21

1.41

1.20, 1.67

Education (number of years)

0.82

0.80, 0.84

0.94

0.88, 1.01

0.84

0.81, 0.88

Type of living area (semi-rural/rural)

1.34

1.21, 1.47

1.00

0.75, 1.33

1.41

1.12, 1.76

Occupational groups defined by sector

Administration& management

1.00

referent

1.00

referent

1.00

referent

Technology, science, social science& art

0.95

0.76, 1.18

1.27

0.76, 2.13

1.33

0.93, 1.88

Health care& social work

2.06

1.72, 2.46

1.61

1.05, 2.48

1.94

1.44, 2.66

Commercial work

1.54

1.21, 1.95

1.03

0.62, 1.72

1.46

1.01, 2.10

Agriculture, forestry& fishing

2.33

1.74, 3.14

2.01

0.94, 4.30

2.37

1.41, 3.98

Transport

2.88

2.27, 3.66

2.68

1.35, 5.33

3.16

2.04, 4.89

Production& mining

3.51

2.92, 4.21

1.88

1.15, 3.08

2.83

2.03, 3.94

Service& military work

2.90

2.40, 3.51

1.48

0.91, 2.43

2.71

1.94, 3.78

Psychosocial working conditions

Job demands (range 1–10, high score is low)

1.63

1.54, 1.73

1.17

1.00, 1.37

1.35

1.20, 1.53

Job control (range 1–10, high score is high)

0.76

0.73, 0.78

0.80

0.72, 0.89

0.79

0.74, 0.85

Social support (range 1–10, high score is high)

1.17

1.05, 1.30

0.90

0.75, 1.09

0.94

0.81, 1.10

Job strain

High strain

0.75

0.59, 0.96

1.87

1.07, 3.29

0.81

0.55, 1.21

Low strain

1.00

referent

1.00

referent

1.00

referent

Active

0.60

0.51, 0.71

1.06

0.76, 1.50

0.79

0.60, 1.03

Passive

1.54

1.33, 1.80

1.41

1.03, 1.94

1.35

1.04, 1.75

Iso-strain

1.15

0.93, 1.41

2.84

1.58, 5.11

1.43

1.00, 2.03