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Table 3 Poisson proportional hazard ratios for all-cause mortality and occupational sitting time (≥24 hr/wk)

From: Temporal changes in occupational sitting time in the Danish workforce and associations with all-cause mortality: results from the Danish work environment cohort study

 

All-cause mortality

 

Follow-up 1991–2010a

Follow-up 2001–2010b

 

HR

95 % CI

HR

95 % CI

Occupational sitting time

    

<24 hr/wk

1.00

Reference

1.00

Reference

≥24 hr/wk)

0.97

0.79; 1.18

1.25

0.90; 1.74

Age (years)

    

21–40

1.00

Reference

1.00

Reference

40–49

3.74

2.31; 6.06

4.36

2.00; 9.51

50–59

9.98

6.38; 15.61

9.07

4.32; 19.07

60–69

23.75

15.22; 37.07

21.45

10.22; 45.02

≥70

52.01

32.14; 84.16

58.79

23.80; 145.24

Gender

    

women

1.00

Reference

1.00

Reference

Men

1.62

1,35; 1.94

1.43

1.02; 20.00

Socio-economic status

    

social class I (highest)

1.00

Reference

1.00

Reference

social class II

1.14

0.81; 1.60

1.36

0.76; 2.44

social class III

1.33

0.98; 1.80

1.61

0.95; 2.74

social class IV

1.23

0.85; 1.78

1.25

0.65; 2.38

social class V (lowest)

1.86

1.36; 2.53

1.94

1.11; 3.38

BMI (kg/m2)

    

normal (<25)

  

1.00

Reference

overweight (25- <30)

  

0.83

0.59; 1.16

obese (30+)

  

0.86

0.52; 1.41

Smoking

    

never

  

1.00

Reference

former

  

1.34

0.87; 2.06

current

  

2.01

1.36; 2.97

Leisure time physical activity (<2 h/wk of light intensity)

    

No

  

1.00

Reference

Yes

  

1.38

0.95; 1.99

At least daily fruit or vegetable consumption

    

No

  

1.00

Reference

Yes

  

0.61

0.44; 0.85

  1. aAdjusted for age, gender, socio-economic status and calendar year
  2. bAdjusted for age, gender, socio-economic status, BMI, smoking, leisure time physical activity and fruit and vegetable consumption