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Table 4 Poisson proportional hazard ratios for all-cause mortality and occupational sitting time (as continuous variable)

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 (per 10 hr/wk increase) 0.97 0.91; 1.05 1.09 0.97; 1.23
Age (years)     
 21–40 1.00 Reference 1.00 Reference
 40–49 3.74 2.31; 6.06 4.36 2.00; 9.49
 50–59 9.98 6.38; 15.63 9.08 4.32; 19.09
 60–69 23.69 15.18; 36.98 21.56 10.27; 45.35
  ≥ 70 51.67 31.92; 83.63 59.56 24.08; 147.30
Gender     
 women 1.00 Reference 1.00 Reference
 Men 1.63 1.35; 1.95 1.41 1,00; 1.98
Socio-economic status     
 social class I (highest) 1.00 Reference 1.00 Reference
 social class II 1.13 0.80; 1.58 1.37 0.76; 2.46
 social class III 1.31 0.96; 1.78 1.64 0.96; 2.80
 social class IV 1.19 0.81; 1.74 1.30 0.68; 2.52
 social class V (lowest) 1.81 1.31; 2.49 2.02 1.15; 3.55
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; 2.05
 current    2.00 1.36; 2.96
Leisure time physical activity (<2 h/wk of light intensity)     
 No    1.00 Reference
 Yes    1.37 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