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Table 5 Electricians versus the construction industry, Denmark, mortality rate 1987-1995, men

From: Quantification of the healthy worker effect: a nationwide cohort study among electricians in Denmark

Exposure #Death RT MR Model 1 Model 2 Model 3 Model 4
     MRR (95%CI) MRR (95%CI) MRR (95%CI) MRR (95%CI)
Not electrician 2,571 629,336.2 408.5 1 (ref) 1 (ref) 1 (ref) 1 (ref)
Electrician only year 0 70 13,394.7 522.6 1.13 (0.89-1.45) 1.29 (1.00-1.65) 1.39 (1.01-1.90) 1.40 (1.12-1.75)
Electrician only year 2 25 9,649.5 259.1 0.79 (0.53-1.19) 0.84 (0.56-1.27) 0.74 (0.45-1.21) 0.82 (0.55-1.21)
Electrician year 0 and 2 196 106,846.9 183.4 0.90 (0.77-1.05) 1.01 (0.87-1.19) 0.95 (0.80-1.14) 1.18 (1.03-1.36)
  1. RT, risk time - person years of risk; MR, mortality rate per 100,000 person-years; MRR, mortality rate ratio; 95%CI, 95% confidence interval.
  2. Model 1: Adjusted for age (5-year groups) and calendar year.
  3. Model 2: Adjusted for employment status, incapacity benefits, sick leave and unemployment in year 1, age (5-year groups) and calendar year.
  4. Model 3: Only persons with employment status = 1 in year 2 were included. Adjusted for employment status, incapacity benefits, sick leave and unemployment in year 1, age (5-year groups) and calendar year.
  5. Model 4: Marginal structural model with weights estimated as described in the Methods section. Adjusted for age (5-year groups) and calendar year.